【3D Design Supervised by a Chiropractor, Simultaneously Loosening Hard-to-Reach Shoulder Blades】Based on the techniques of chiropractors, 20 three-dimensional protrusions are designed to stimulate a wide area of the shoulder blades and back, which are difficult to care for on your own. Just by lying down, you can achieve a comfortable relaxation, as if you were being massaged by a professional chiropractor. 【V-shaped Design for a "Shoulder Blade Release" Stretch That Works Deep】The unique V-shape gently lifts the shoulder blades, loosening muscles while stretching. Simply swaying gently from side to side will target stiff, deep muscles. 【5 Minutes a Day is Enough! Relieve Stiffness Caused by Desk Work and Lack of Exercise】Care for stiff shoulder blades caused by long hours of PC work or driving, starting with just 5 minutes a day. Easy to use while sitting or lying down, it comfortably presses and loosens stiff muscles, refreshing the entire back. 【20 Protrusions Directly Stimulate Stiffness】20 ergonomically designed, elastic protrusions loosen the muscles of the shoulder blades that are stiff and hardened. 【High Quality & 1-Year Warranty, Planned and Developed by a Japanese Company, Perfect for Gifts】Planned and developed by a Japanese company, we are confident in our quality. A 1-year warranty is included in case of damage. It is also a great health gift for Father's Day, Mother's Day, Respect for the Aged Day, etc., to show your gratitude.