★ This innovative posture-improving exercise pillow was developed by Dr. Chihiro Yamamoto, author of "Maki Dake Diet," specifically for the physique of Japanese people. ★ Stretching is the best way to improve body balance and achieve good posture. It's important to continue it 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 very comfortable with just the right firmness. ★ Product size (Length 140mm x Width 350mm x Height 70mm)