After suffering a sports injury in 2007, I began to develop lower back pain and the MRI showed L4 and L5 herniated discs in my lower spine. I tried every remedy available, but every year I would throw my back out doing the most basic activities. My back pain went on for over ten years. During that time, I tried everything from acupuncture, heavy pain medications, PT, sports massages, and finally chiropractors.
As the Managing Director of Martha Stewart brand, i found myself missing meetings as my chronic back pain got worse.
After a few months of using CastleFlexx for 8 to 16 minutes a day, I began to feel better, move better and even look better. My wife Carly, who had also begun using CastleFlexx, experienced significant improvement and no longer complains about her hip pain and sciatica.
Dan Castle
CASTLEFLEXX FOUNDER & CREATOR
Our Story
CastleFlexx began with a simple idea born from a very real problem. After years of living with debilitating back pain and finding that traditional stretching tools never reached the areas he needed most, founder Dan Castle set out to create something better.
The result was CastleFlexx—a patented mobility device designed to help people stretch more effectively, move more freely, and feel better in their bodies. What started as one personal solution has grown into a collection of innovative health and recovery products used by everyday customers, professional athletes, and people of all ages around the world. Through every product we create, our mission remains the same: make better movement easier, more accessible, and part of everyday life.
Our Mission
Our mission is to help people move with greater freedom, confidence, and comfort. We believe mobility isn't reserved for elite athletes — it's something everyone deserves.
Whether you're recovering after a workout, staying active as you age, or simply trying to feel better throughout the day, we're committed to creating tools that support long-term movement and healthy living. Because when your body moves well, everything else becomes easier.
Dan Castle's Award Winning Inventions
CastleAir™
Adjustable, air-supported cervical positioning system that supports the base of the skull, and provides stable, comfortable support.
Luxury Edition
Promotes proper dorsiflexion to help increase blood flow, accelerate healing, and help you recover faster while maintaining flexibility.
The FlexxMat
Premium stretch mat designed for extra space and comfort. More surface area than a yoga mat and 25% more cushion than standard mats.
Heat Edition
Heated stretch device created to make stretching feel warmer and comfortable. Patented globally and USA owned.
VS Straps/Bands
Natural Stress-Free Grip
Causes Rope Burn 🔥
100% Toe Dorsiflexion
0% Toe Dosiflexion
Active & Passive Stretching
Passive Only
Neutral Spine
Awkward Positions
“I read the reviews and thats when I knew people were seeing the same success I had for their pain issues”
“CastleFlexx is the perfect gift to get anyone for Christmas. It's been life changing for me. I was a customer first and I purchased it prior to my European tour with Panatta this summer. It literally SAVED ME.”
Body Building Champion
“I use it an hour a day.”
#13 | NL MVP 2023
“Well designed and very nice colors.”
Businesswoman & Writer
“My lower back has held up. It's unreal.”
Stanley Cup Winner 2023
“Gripping a band or a strap is painful. This changes everything.”
Julliard NYC
Start Your Journey Today
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Hot/Cold Packs
Hot/cold packs with no toxic blue gel that don’t require freezing and are microwavable.
From $24.00 USDUnit price per
