★ This innovative posture-improving exercise pillow was developed by Dr. Chihiro Yamamoto, author of "Maku Dake Diet," specifically for the physique of Japanese people. ★ Stretching is the best way to improve body balance and achieve correct posture. It's important to continue daily without overdoing it! You can stretch just by lying down for 3 minutes! ★ Unlike commercially available stretch poles and foam rollers, which are too large for the Japanese body, this pillow has the perfect size and resilience. It's just the right firmness for the body and is very comfortable. ★ Product size (Length 140mm x Width 350mm x Height 70mm) ★ Soft type