Name & Origin Flexcushion(TM) / Made in Japan Color FC-A402K(Black) / FC-A402B(Beige) Price $119.95 USD(+tax)(+shipping) Material (Cover) PVC, Polyester (Inside) Polyurethane foam, etc. Weight & Size Weight: 2.55 lb (=1.15kg) / Width: 1f4 (=40cm) / Depth: 1f4 (=40cm) Front Height: 1.2inches (=5cm) / Back Height: 8inches (=20cm) Innovative Stretch Gear for hip joint and pelvis ! (Fitness Business May-June 2007, issued by Club Business Japan) With its "angle", "heights", and "structure", Flexcushion makes it easier to stretch adductor, hamstring, and muscles around hip joint and pelvis. Our President & Founder, Nao SAKATA, when he was a member of Sumo Team at Rikkyo University, had difficulty with Sumo's MATAWARI (=splits) training, which was essential for Sumo. Later, he found it easy to stretch when he sat on the Dohyo, the straw bag (5cm = 2 inches high), which is now the front height of Flexcushion. With advice of Professor Hideo NUMAZAWA (Rikkyo University), Nao SAKATA developped the Flexcushion in 2006. * Official Gear for Sumo Core Exercise�iProduced by SANTEPLUS 2006, Recommended by International Sumo Federation) * Recommended by NPO Japan Stretching Association, and by Japan Argentine Tango Dance Association Not many people can do stretching exercises with right posture. Flexcushion helps to maintain a neutral pelvis while seated. See the chart ==> One of the objectives is to gain flexibility around hip joint by stretch workouts with right posture. To promote health by Stretch & Exercise To perform better in athetic acitivities *cf: Users' Voices 4 Japanese Professional Baseball Teams, including Chiba Lotte Marines, Tokyo Yakult Swallows, and Yokohama Baystars/ Japan's leading Judo Teams including Kokushikan University, Tokai University, Asahi Kasei / Japan's leading Marathon, Rugby,Skating Teams, Japan's Table Tennis National Team, etc. Japan's leading National Chain Health Clubs such as TIPNESS and COSPA. Pilates studios such as Pilates on Fifth in NYC, and many in Tokyo. Individuals who are involved with Sports, Fitness, Yoga, Pilates, Ballet, Martial Arts, Dancing, etc., and aged men & women who want to maintain their health condition. Hospitals for rehabilitation. Stretch & Exercise Menu is included in the instruction, that comes with the product. Please refer to our Stretch & Exercise page !