Experts' Comment
Name Flexcushion (FC-A402) <Made in Japan>
Weight 2.55 lb (1.15kg)
Size Height: 2 inches (5cm) to 8 inches (20cm) Width & Depth: 16 inches (40cm)
Patent #7966679 (US registered, and internationally pending)
Price $114.95 (USD)

Derived from MATAWARI Stretch of Japan's Martial Art “Sumo”

Our President & Founder, Nao SAKATA, when he was a member of the Sumo Team at Rikkyo University, had difficulty with Sumo's MATAWARI (splits) training, which was essential for Sumo. Later, he found it easier to stretch when he sat on the Dohyo, a straw bag (5cm / 2 inches high), which is now the front height of the Flexcushion. With advice from Professor Hideo NUMAZAWA (Rikkyo University), Nao SAKATA developed the Flexcushion in 2006.
・Official Gear for “Sumo Core Exercise”(SANTEPLUS 2006, Recommended by International Sumo Federation)
・Recommended by NPO Japan Stretching Association
・Exhibited at IHRSA 2008 / NSCA SSTC 2009/ Inner IDEA 2009 / PBATS 2010 / NATA 2010 / IDEA World Fitness 2010
  • Top Athletes and Teams in Baseball / Soccer / Football / Golf /Track & Field / Syncho / Volleyball / Tennis / Basketball / Fencing / Ski / Judo / Sumo
  • Numerous Health & Fitness Clubs / Pilates Studios / Yoga Studios / Ballet Studios
  • Dancers / Strength Coaches / Athletic Trainers / PT / Hospitals / Clinics
  • See the detail at our corporate page "www.flexcushion.com/about"
Produced by SANTEPLUS
Supervised by Dr. Donald A. CHU (PhD, PT, ATC, CSCS, NSCA-CPT, Director of Athercare Fitness & Rehabilitation)
Advice from Hideo NUMAZAWA (Professor at Rikkyo University, School of Sports & Wellness)
Advice from Yoshihito NAGAHATA (Director, NPO Japan Stretching Association)
Advice from Lisa Yumi Michelle (Actress & Model)
Advice from Kayoko YAMAMOTO (Professional Trainer)
Demonstrator Sayaka SHIMAMOTO (Model)
  • Please wipe the Flexcushion with a dry towel when it is not clean.
  • The cover of the cushion should not be opened. Do not wash it, as it is not washable.
  • Do not use any liquid or oily material for cleaning purposes. It might damage the cover.
  • Avoid direct sunlight. Direct sunlight can cause a change in the shape and color.
  • Do not leave it in cars, or in the hot or humid places.

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