Two muscles, two tips, one tool: a broad tip for the psoas and a narrower angled tip for the iliacus.
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Bundle the Black Swan neck, forearms, and hand release tool with your Core Nexus — normally $35, yours for just $15. Discount applied at checkout.
Two muscles, two tips, one tool. Core Nexus has a broad tip designed for the psoas and a narrower angled tip designed for the iliacus. Adjust placement and pressure according to the product instructions.
The tool also has uses for the glutes, piriformis, TFL, and glute medius. These are different locations from the psoas and iliacus; consult the corresponding video guide.
Single-piece industrial-grade TPU. Dimensions: 5.5″ × 3.5″ × 3.13″. Weight: under 1 lb. Made in the USA. Patent pending.
The Core Nexus tool, quick-start guidance, and access to the video tutorial library. Any bundle add-on is shown separately in your cart.
Free US shipping. Please read the 30-day return policy and lifetime warranty for eligibility, return shipping, exclusions, and replacement limits.
Suitability, fit, and experience vary. Read the safety information and seek guidance from your healthcare professional before use. This tool is not a substitute for professional assessment or care.
Use gentle, controlled pressure. Stop if use causes pain, numbness, tingling, or other concerning symptoms.
Not sure your current tool reaches?
Compare six release tools on a true-scale 3D hip and see how their geometry lines up with the psoas and iliacus.
Not sure it reaches? Run the free 3D Reach Test →A broad tip for the psoas. A narrower angled tip for the iliacus. Explore a compact, dual-purpose tool for your mobility routine.
Short on time? Watch the quick demo and see how simple it is.
The psoas and iliacus are distinct muscles in the hip flexor group, with different locations and shapes.
Core Nexus brings two contact shapes into one compact tool. Product geometry explains its design; it does not identify the cause of symptoms or determine whether a tool is right for you.
Core Nexus has two distinct tips: a broad tip designed for the psoas and a narrower angled tip designed for the iliacus. Two muscles, two tips, one compact tool. Made in the USA from industrial-grade TPU.
Core Nexus is designed for the psoas and iliacus. Begin with the product instructions and safety guidance; professional advice matters.
Read the safety information and watch the placement guide before using the tool.
The broad tip is designed for the psoas; the narrower angled tip is designed for the iliacus. Follow the corresponding instructions.
Use gentle, controlled pressure within your comfort level. Stop if use causes pain or other concerning symptoms.
Follow along and see how easy Core Nexus is to use. A certified massage therapist walks you through it — from placement to release.
"As a certified massage therapist, I find the Core Nexus to be an exceptional tool for releasing tension in the iliopsoas. This muscle group is often challenging and time-consuming to manipulate, but the Core Nexus can be easily positioned and rotated to provide effective self release."
From chiropractors to MDs to massage therapists — movement professionals trust Core Nexus for their clients and themselves.
"Absolutely love the Core Nexus Tool! It releases so much tension in my psoas and iliacus — feels like a deep reset every time I use it. Super effective and easy to use, whether it's morning, night, before or after training. It's become a daily essential in my recovery routine. Highly recommend!"
"Core Nexus addresses both the psoas and iliacus — nice to have that utility. I prefer the material to the Pso-rite and Hip Hook, which are a lot more aggressive. More attainable for your average person. It's got a nice design that allows you to roll with it and get into those muscles we know can be problematic in people with back tension or hip issues."
"As a doctor of physical therapy, I highly recommend the Core Nexus. This compact all-in-one tool is specifically designed to release the psoas and iliacus muscles, which are often the root cause of lower back and hip tension. It targets these stubborn deep muscles easily and quickly with its unique rotating two-tip design. When I use this, I experience a deep release and it makes me feel fantastic. Just 2 to 3 minutes on each side is all it takes. It's extremely high quality and durable."
"I cannot speak highly enough of such an amazing product. For anyone suffering from low back or hip tension, the Core Nexus will specifically hit all of those targeted areas. As a chiropractor and also one who suffers from these conditions, it is a valuable tool and provides significant relief. This device can also be used on multiple areas of the body which is an added bonus. The Core Nexus does not disappoint. You will love it just like I do."
"The dual-tip concept is genuinely innovative. I see the psoas-iliacus connection contribute to low-back tightness every single day in my practice. Core Nexus gives my clients an effective way to maintain their adjustments at home between visits."
Tap a card to explore a feature. These are product details, not an assessment of your health.
Two muscles, two tips, one tool.
Explore Core NexusChoose a product topic below. No symptom questions, scoring, or health assessment.
The broad tip is designed for the psoas; the narrower angled tip is designed for the iliacus. Core Nexus brings both contact shapes into one compact tool. See the placement guide before use.
Core Nexus measures 5.5″ × 3.5″ × 3.13″ and weighs under 1 lb. It is made in the USA from industrial-grade TPU in a single-piece design. The illustrative Reach Test explores geometry, not medical effectiveness.
Read the safety information and seek advice from your healthcare professional about suitability. Follow the product instructions. A product guide cannot identify the cause of symptoms or prescribe a routine.
I love the duality of the core nexus! As a track athlete it is very common to have tight hip flexors and muscles around that area because of the constant contractions performed during running.
The core nexus gave an almost instant release of the muscle without needing help from PT. I think it's a great mobile and convenient tool to take care of your muscles!
I really enjoy the Core Nexus and it has really helped me release my hips and gets me ready for the court by rotating deep into my psoas! I also like how it has helped me release my hamstrings too deep release of these muscles
I’ve been using the Core Nexus for a few days now and I’m really impressed. Whether I’m throwing lefty or righty, it gets me loose and ready. It’s easy to use, simple to place, and feels like a high-quality device. I’ve been watching videos to learn how to get the most out of it, and so far everything has been smooth. Definitely recommend it to any pitcher looking for a reliable tool like this.
I highly recommend the Core Nexus, it has helped me improve mobility in my hips by easily enabling me to release my psoas and iliacus! It is compact and does a great job of getting deep into my muscles for a great release. And as a collegiate basketball 🏀 player being able to change direction quickly and move freely is a must, and the Core Nexus helps me do that!!
I love the Core Nexus and the way it is so easy to find the psoas and iliacus muscles! It has really improved my hip mobility along with all of my leg muscles. I have always had bad hips and mobility which caused me to pull other leg muscles but with only one week of using the Core Nexus, I already feel looser and more agile! I would really recommend this product!
As a college lacrosse player, recovery is everything and the Nexus Health Tool has seriously become a game-changer in my routine. I’m constantly dealing with tight hips, sore quads, and the usual post-practice aches, but this tool helps me target those deep muscles I usually can’t get to with a foam roller alone. What I love most is how easy it is to use on my own especially for areas like the psoas and iliacus that are hard to release without a trainer. After using it consistently, I’ve noticed a big difference in how my body feels during speed work, lifts, and even just walking around campus. It’s compact, durable, and fits right into my sideline bag so I can use it between classes or right after a workout. Honestly, it’s one of those tools I didn’t know I needed until I tried it. Highly recommend it to any athlete looking to stay loose, recover faster, and perform at their best!
As a collegiate basketball player I use the Core Nexus to alleviate tightness in my hips before my workout. I love this tool because it helps with my mobility and is a vital tool I use before I train!
The product felt amazing on my hamstrings, really got in deep and relieved a lot of tightness I had been dealing with. After just one use, I noticed improved flexibility and less soreness. It’s definitely one of the best tools I’ve used for muscle recovery. Highly recommend to anyone looking to step up their recovery game!
This tool is great for multifunctional use, making itself able to treat a variety of different areas depending on the issue at hand. It’s small which makes it easy to carry around for sports competition with just being able to have it stored in your bag
Love this tool! Gets into the psoas and iliacus perfectly. Easy to use and effective!
This tool is awesome for hip mobility. It’s easy to use and compact, so I can take it to my baseball practice and games and use it during warm ups to get me ready to perform my best!
The Core Nexus tool has been a staple to my everyday routine and has helped relieve muscle soreness. Super transportable, effective and easy to use!
As a college soccer athlete, I’m always looking for tools that help with recovery, mobility, and injury prevention. The Core Nexus has been a complete game-changer for me! After intense training sessions and games, my hip flexors and lower back can get super tight, but this tool provides deep, effective relief like nothing else I’ve tried. The stability of the Nexus is impressive—it stays in place while I use it, allowing for precise, controlled pressure on my psoas and iliacus muscles. It’s easy to use, durable, and truly helps with flexibility and recovery. Whether it’s for muscle maintenance or post-game recovery, I highly recommend it to any athlete looking to improve performance and prevent injuries. If you’re serious about mobility and recovery, this is a must-have!
The Core Nexus Health tool has been a great tool in enhancing my flexibility in many ways. I am a two sport college athlete playing both baseball and football and this tool has helped ensuring my optimal performance in both respective sports. I also use this tool before workouts as well and find it beneficial before performing workouts such as squats or deadlifts. I find it very stable when using it on my psoas and iliacus muscles, as having both of these muscles loose and free is crucial for my success on the field. I have had experience with SI joint issues in the past and this tool has helped alleviate that pain and I continue to use it for preventative care. If you need to relieve pain or enhance performance I would highly recomend the Core Nexus!
I have dealt with hip flexor tightness and pain for years. This tool has helped me so much in keeping my hip flexors ready to go for my lifting and my pitching! I use it for both recovery and for warming up!
Most of my day is spent working at a computer, I’ve struggled with lower back pain for years. I decided to give the Core Nexus a try, and I’m so glad I did! After just a week of using it for a few minutes each night while watching TV, I felt fast relief from my lower back pain. It’s easy to use and fits right into my evening routine. If you’re like me and spend hours sitting at a desk, I highly recommend the Core Nexus. It’s made a world of difference for my hip flexors and lower back!
As someone who's been involved in athletics my entire life, tight hip flexors have always been a nagging issue messing with my performance. I've tried virtually everything from stretching routines, foam rollers, and even regular visits to the physical therapist, which helped the most, but I always end up needing to go back for more work on these muscles. Then I tried the Core Nexus. This tool is a total game-changer! It lets me target those deep hip muscles (psoas and iliacus) whenever I need. Not only has it boosted my flexibility, but it's also saved me time and money on therapy sessions. The Core Nexus is now a key part of my daily routine, and I highly recommend it to anyone looking to take control of their hip health.
As someone that is all too familiar with the discomfort of tight hip flexors, particularly the psoas and iliacus muscles, I was super excited to add this Core Nexus Rotating Psoas Release Tool to my mobility and pain relief routine. After using this for several weeks, I can say it is an effective, well-designed tool for targeted muscle release of the psoas and iliacus. The tool’s unique rotating head allows for controlled, deep tissue work that hits those hard-to-reach areas in the psoas and iliacus muscles. The ergonomic design fits well under the body, providing good leverage for applying pressure and using my body to rock and release or bending my leg up and down. I watched the instructional videos and have had enough work on my psoas to know I am placing it in the correct spot! The rotating mechanism allows you to gradually work into the tight spots, and the base stays stable on the ground, giving you control without slipping. I found it surprisingly easy to adjust the pressure for more or less intensity as needed. After just a few sessions, I noticed significant relief in my hip flexors and lower back, areas that are often tight for me. I am hoping that consistent use will help improve my flexibility and reduce the nagging tension I usually feel in my hips after long runs or heavy lifting days. It is made from high-quality, durable materials - this tool is built to last. It's also compact, making it portable enough to throw in a gym bag or take along while traveling. If you struggle with lower back pain, hip tightness, or general stiffness, this tool can make a noticeable difference in your recovery and mobility – it did for me!
My chiropractor works my psoas regularly, this feels exactly like what she does but I can control the pressure and ease into it. I just started working the iliacus for about a week now and WOW, I feel less lower back pain already and free in the hips! This Core Nexus tool is amazing!
I have gone through all the other psoas or iliacus tools on the market and this is far and away the best of all of them! The two different tips are excellent at getting to the psoas and iliacus. It’s high quality and I know this tool will never break unlike others I have had. Also what I like the most is now I have one great tool to do it all, and it is really convenient that I can do my Glute Medius, Quadratus Lumborum, and Tensor Fasciae Latae too, as these have been trouble areas for me as well. Considering I paid $200 for a tool that only releases the iliacus, this tool is a bargain because not only does it release the iliacus way better, it releases all the muscles I need to work on. I can’t recommend this tool enough!
Small tool but packs a big punch. Please read the safety warnings and watch the videos so you don’t hurt yourself. Comes with link to a bunch of helpful how to videos. Seems like A lot of thought went into the shape. It gets right to the right spot to release tight muscles. Give it a try
Please review the published terms before ordering. Contact us if you have questions.
Review eligibility, return shipping, and the return process in our published Return Policy.
Read the return and warranty termsCoverage for manufacturing flaws is subject to the published warranty terms, exclusions, and replacement limits.
Read the return and warranty termsCore Nexus has two distinct tips: a broad tip designed for the psoas and a narrower angled tip designed for the iliacus. Two muscles, two tips, one compact tool. Made in the USA from industrial-grade TPU.
The broad tip and narrower angled tip offer two contact shapes for the psoas and iliacus. Consult the product instructions for positioning; choose pressure and placement with professional guidance.
Core Nexus has two distinct contact shapes in one solid tool. Rollers and balls have different shapes and contact areas. Preference, fit, and intended use vary; a comparison does not establish which product is suitable for you.
Read the safety information and seek guidance from your healthcare professional before use. Suitability and experience vary. Stop if use causes pain, numbness, tingling, or other concerning symptoms.
Experience varies from person to person. We do not promise a particular result, a fixed timeline, or permanent changes. Follow the instructions and the guidance of your healthcare professional.
No tool is suitable for everyone. Body shape, comfort, health history, and intended use matter. Review the safety information and ask your healthcare professional whether Core Nexus is appropriate for you.
Ask the professional overseeing your care before use. This product is not a substitute for an assessment, prescribed care, or rehabilitation advice.
Industrial-grade TPU (thermoplastic polyurethane), in a single-piece design. Dimensions: 5.5″ × 3.5″ × 3.13″; weight under 1 lb. Made in the USA. Patent pending.
The tool also has uses for the glutes, piriformis, TFL, and glute medius. Follow the corresponding video instructions and safety guidance; these are different locations from the psoas and iliacus.
No. A manual pressure tool is different from stretching and is not a replacement for professional care. Your healthcare professional can advise whether and how to include it in your routine.
The Core Nexus tool, quick-start guidance, and access to video tutorials. US shipping is free. The 30-day return policy and lifetime warranty are subject to their published terms. Black Swan is available as an optional bundle add-on for $15.
See our Return Policy and Lifetime Warranty for eligibility, return shipping, exclusions, and replacement limits. For help, email support@nexushealthtools.com.
Built from personal experience and a focus on product design.
Bryan explored psoas and iliacus tools, then spent 18 months engineering, prototyping, and testing Core Nexus. His aim was a compact tool with two distinct contact shapes: one for the psoas and one for the iliacus.
His personal experience inspired the product. It does not predict another person’s experience or replace professional advice.
Core Nexus wasn't created to start a business. It was created because this tool needed to exist.
Read Bryan's full story →Consider how a compact manual tool fits your routine. Follow the product instructions and safety guidance.
Keep your mobility equipment together for a break from sitting.
A compact manual tool to consider alongside your usual warm-up and mobility routine.
Make space for an unhurried routine after a run or workout.
No batteries or assembly. Store it with your other mobility equipment.
Follow the instructions and use gentle pressure. More pressure is not necessarily better.
Under 1 lb, with a compact 5.5″ × 3.5″ × 3.13″ footprint.
