CastleFlexx | The Future of Mobility & Stretch – Castle Flexx

Welcome to the FUTURE OF

Mobility & Strength

Shop Now

As Seen In

Shop Up to $100 OFF!

Holiday Season Sale: Buy 2 Luxury Edition, Get 20% OFF!

Multi-purpose Device

The Future of Mobility is Here

Shop Now
castleflexx-social-gym Strength

A Device for everyone

Who’s Using CastleFlexx?

  • People with Chronic Pain or Injuries
  • Professional Sports Therapists
  • Yoga & Pilates Enthusiasts
  • Age 65 & up
Dr. Bronson Walters Atlanta, GA Director of Physical Therapy
CastleFlexx physical therapy
CastleFlexx massage therapy tool

We Are Revolutionizing The Way You Stretch

CastleFlexx® is a new functional stretching, mobility, and fitness tool that will change the way we self care our bodies.

CastleFlexx® | The Future of Stretch is here.

Regular price $367.00
Unit price  per 

2 lbs. Magnetic Weight

Tax included. Shipping calculated at checkout.
Key Features:
  • At-home Stretching & Workout Device
  • Hammock stretch for plantar fasciitis
  • Rolls Up for Easy Access
  • Ergonomic Design, Soft Handles & Fabric
  • Release tension in calves, hamstrings, hips, glutes
  • Decreases Joint, Muscle and Ligament Pain
US PATENT NO. 11020625 | 12383119 | 11383119 | 11969620 | USD963076 AUSTRALIAN REG. DESIGN NO. 202316696 EUROPEAN COMMUNITY DESIGN REG. NO. 015036096 UK DESIGN REG. NO. 6316801 TRADEMARK NO. D963076
Patented in 40+ countries


Over 97% 5-star reviews!

Subscribe to our newsletter

Enter your email for access to tips and instructional videos

Multimodal Bar

Detachable Magnetic Weights

Learn More

Relieve Tension Across Your Body


  • At-home Stretching & Workout Device
  • Decreases Joint, Muscle and Ligament Pain
  • Hammock Stretch for Plantar Fasciitis
  • Magnetic Detachable Weights (2 lbs)

The band stretches instead of you

CastleFlexx® vs. Bands or Straps

stratching-foot Foot is idle, bands stretch & not your foot
With CastleFlexx®, your toes are in dorsiflexion
castleflexx-bands-hands grip fatigue & circulation loss
Comfortable balanced grip

Bands Mean Circulation Loss

CastleFlexx® vs. Bands or Straps

Flexx Anywhere


Get the Answers You Need

Frequently Asked Questions

How is this better than typical stretch straps?

CastleFlexx is the only device with a weight assisted mobility bar as well as a unique patented "foot hammock" that is completely velcro free. Our foot hammock gives you the ability to fully flex the toes back, resulting in a stretched plantar fascia. It is truly one of a kind. Fasciial slips insert into all phalanges so it is important to have the toes stretched passively into extension as the foot is pulled into dorsiflexion. Simply put, a stretching strap does NOT achieve this.

Furthermore, stretch straps also lack the other components that make CastleFlexx so unique such as the ability to use the weighted mobility bar to improve core strength which is important because it takes stress off of your lower back.

I’m over the age of 65 and have arthritic hands, will this work better for me than a stretch band?

Based on feedback we have received over the years from the 65-85 age demographic, gripping and pulling a rope was found to be very stressful on the hands and fingers, especially for those with arthritic hands and arms.

In addition, CastleFlexx is completely effective when utilized in a seated position, which is great for those who have injuries or other issues that may prevent them from laying down the way they would with standard stretching. Another bonus - you do not need to bend forward and compromise your back to attach straps and secure your foot such as required with other typical stretch devices.

Ok, I get that, so can’t I just use a towel?

The use of a towel is simply not effective because the anchor point at the heel is poor and the foot (and therefore the leg) is not secured properly.

The CastleFlexx has comfortable handles that provide a secure grip for a steady pull; a towel offers nothing more than an inconsistent amount of material which can be difficult to hold and maintain. Try stretching your hips, hamstrings or lats with a towel, and we are sure you will agree that the CastleFlexx is the most fun and effective stretch you’ve ever experienced!

Will I like CastleFlexx and if not, can I send it back?

If you don’t agree that it’s the most effective, multifunctional stretch and core strength device you have ever tried then gift it to someone who has lower back issues or just send it back within 14 days of receipt. We will be sad that it didn't change your life, but we will be happy to fully refund you for the cost of the product. You only pay for the shipping each way.

Why is CastleFlexx better than traditional red and black colored stretching devices that use Velcro strap enclosures?

CastleFlexx is velcro-free and does not require any strapping in or out.   CastleFlexx has a patented handlebar with optional magnetic weights that provides a controlled comfortable stretch and it wont slip out of your hands like rope straps can.

CastleFlexx can be used sitting, standing, or laying down. CastleFlexx is designed to focus on BOTH mobility and flexibility AND you will ALSO get a natural bicep workout while using the device while gripping the bar on both sides.

Can I use my HSA/FSA card?

Yes we are HSA/FSA eligible but you MUST checkout “As A Guest” and when you get to the payment choices…Choose TrueMed option.

Can I bring it on an airplane?

No, TSA will confiscate it. Always check it in your luggage and remove the weight if you want your bag to be lighter.

Can I use my HSA/FSA funds?

We accept FSA/HSA - If you have a health issue such as back pain , plantar fasciitis, circulation, shoulder impingement, high blood pressure  etc etc just checkout as a “guest” and choose the TrueMed HSA/FSA option at the very end of your checkout. Answer 3 simple health questions and you get approved immediately to use your card for savings up to 40%. Tell your friends who would be excited to use their funds on a game changing device.