The CastleFit | Online classes and daily flows – Castle Flexx


Regular price $139.00
Unit price  per 

2 lbs. Magnetic Weight

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

Try it for 2 weeks. If your'e not loving our classes then just email us to cancel for a full refund. Make sure to DOWNLOAD the CASTLE FLEXX App on the app store for easy one click access to daily classes.

WHEN CAN I BEGIN? Once you purchase CastleFit online membership, the system requires 12 minutes to process you into the Teachable class system and then you will get an email to log in.

CastleFit is an annual subscription with one of the top trainers and therapists in the country, Sydnee Lincoln of Denver Sports Recovery, and we created dozens of follow-along instructional HD videos and relaxing flows for you to choose from based on your age and abilities. 

Plus, behind-the-scenes access to view how we train the world’s top athletes at the Yankees, Vegas Golden Knights, and Everton FC Premier League. 

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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Sign Up and Get 10% off Private Zoom Lessons with a CastleFlexx Specialist

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

FlexxCare 1 Year Product Insurance
FlexxCare 1 Year Product Insurance
FlexxCare 1 Year Product Insurance
FlexxCare 1 Year Product Insurance

FlexxCare 1 Year Product Insurance


"The CastleFlexx is a new world for me and because its expensive, I needed some peace of mind that if something happens like my dog eating the handles that I would be covered so I LOVE this insurance option!“ Jessica H.

Choose Your Color & Size:


Product insurance that gives you peace of mind that if anything happens to your device making it unusable, you can return it and we will replace it immediately.

Proudly Featured In:

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.

Tested By Athletes!

What Are The Differences Between The NEW CastleFlexx Sport & The Luxury CastleFlexx I Already Own?

  • The Sport is available in Youth sizes ages 6-12 (Under 5ft only)
  • Weight: The Sport is 3x lighter than the Luxury version
  • Both versions achieve optimal toe dorsiflexion and upper body stretching.
  • FlexxBar: The Sport does NOT have a removable weight for full body strengthening routines or stretch assistance (When you are lying down and stretching, the weight of Luxury version creates “stretch assistance” as if someone is helping you pull the bar downward for a deeper stretch. The Sport Edition requires you put more effort into your arm work.

Who Is CastleFlexx Sport For?

CastleFlexx is for everyone! 

  • People with Chronic Pain or Injuries
  • Athletes for Speed & Mobility
  • Professional Sports Therapists
  • Yoga & Pilates Enthusiasts
  • Age 65 & up
  • Travelers

CastleFlexx has been going viral on the internet and has been used by countless celebrities, professional athletes, and health proffesionals. 

A Special Mesage

From The Founder of CastleFlexx

A review from Dan Castle - Founder of CastleFlexx

The way I look at it is simple, one is super luxury and has advantages when stretching the lower body or strengthening the entire body, and the other is lightweight and can be taken anywhere.

Whether you prefer the Bentley or the BMW Sport, we NOW have BOTH options available for you.

Frequently Asked Questions

Get The answers you need