Metabolic Strength Training | Flexibility & Functional Mobility Training – Castle Flexx

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CastleFlexx Training Session
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CastleFlexx Training Session

Regular price $160.00
Unit price  per 

"I gifted this to my husband for his back issues and hes never been happier about a present…" - Kelly

Book 1-on-1 Zoom flexibility and functional mobility training session! In this session, CastleFlexx will teach you how to use your device properly and based on your specific chronic pain issues. The first session will focus on correct form, general tips to get the most out of your device and teach you how to make sure your CastleFlexx lasts for a very long time. 

Product Dimensions
Standard Size: Bar Length: 19.5" Bar Diameter: 1.25" Fabric Length: 22" Weight: Total 2lbs weight
Large Size: Bar Length: 22.5" Bar Diameter: 1.25" Fabric Length: 33" Weight: Total 2lbs weight


Relieve Tension Across Your Body

Areas We Treat

  • Plantar Fascia
  • Lower Back
  • Calves
  • Peroneal
  • Hamstrings
  • Hips
  • Lats
  • TFL
  • Adductors
  • Abductors
  • Shoulders
  • Quads
  • Forearms
  • Achilles

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Considered by many to be the best baseball player in the world, Ronald Acuna Jr tore his ACL in 2021 and was introduced by his doctors to CastleFlexx. Nine months later he returned to the field and was voted an All Star for the third time by the fans. In 2022, Acuna Jr. won the MLB comeback player of the year award.

Roll Up for Easy Access

The device's slim profile allows you to display to fit with your home decor.

Heel First

When using the CastleFlexx make sure you position it so that your heel is placed in the hole, with the canvas stretching over your foot and the front of your leg.

Correct Form

You can stretch while sitting or lying down. Keep your neck and shoulders relaxed and choose either an under or overhanded grip based on your comfort. Pull back very gently as the stretch sleeve has no elasticity.

Devoted to Details & Sustainability

  • Soft RPET Canvas & Sandblasted Aluminum

  • Canvas Made From Recycled Bottles

  • Aluminum Pull-tab & Premium Stitching

  • Natural Cork Handles

The Pendulum Stretch

The Castle Flexx is a multi-purpose device that stretches and releases tension for different body parts depending on how it’s used.









Instructional Videos

Learn The Stretches & Exercises

Collaborating with industry leaders in physical therapy, sports fitness, yoga and pilates, we have designed a series of original workout regimens that help customers develop: mobility, flexibility, strength and stamina.

What the Professionals Say


The CastleFlexx is a great tool for hip mobility, hamstring tightness, tendinosis and plantar fasciitis. It's one of the best stretching devices out on the market today! We use it with all of our patients here to help improve their quality and treatment plans.

Dr. Rachel Skolnick

DC, BS. Chiropracter

The bar itself is a one of a kind design. It puts zero stress on your patients back, neck or shoulders. You are able to just isolate the muscles you are trying to stretch. It is the best hamstring stretch one could ever get!

T Delgado

Personal Trainer

Unlike isolated stretching, Castleflexx stretches the entire posterior chain of the lower limb making it THE functional stretching tool on the market.”

Dr. Hamid Sadri

DC, CCSP, ICCSP, CSCS, CKTP, CES, PES Official Team Chiropractor, Atlanta Braves

Are you ready to feel the best you've ever felt? CastleFlexx is a revolutionary product that helps you become more mobile, more flexible and alleviate chronic pain in a way I never thought possible.

Bari Newman

Registered Yoga teacher