FULUWA Doctor's Knee Futon Comfortable Sleep Knee Support With the peace of mind and comfort of being gently wrapped in human hands, this is a healing knee-specific futon that gently supports the back of your knee. Wrapped in plenty of cotton, both your body and mind will sleep. This is the doctor's comfortable sleep series, designed with sleep quality in mind. For those who are suffering from painful knees during sleep. For those who cannot sleep with their knees extended, want to support knees that don't extend, or want to warm the area around their knees. Simply slip it on over your pajamas. The position is stabilized by filling the gap in the back of the knee. Gently supports the knee. Thick cotton filling in the area you want to fill the gap Light cotton filling for calves and thighs to avoid discomfort 【Material Details 1】Deodorizing and antibacterial fabric TRINOCOOL(R)CF Clean at all times with deodorizing and antibacterial fabric. This fabric is porous and has excellent breathability. It is also stretchable and fits snugly on the knee. 【Material Details 2】Material that provides a sense of security: Teijin's Fuwarine(R) is used for the filling Gently and flexibly wraps the knee. You can also feel a gentle warmth, providing a sense of security. *Fuwarine(R) is a registered trademark of Teijin Frontier Co., Ltd. Machine washable. The filling is durable to washing, so you can wash it without worry and keep it clean. Developed in collaboration with an orthopedic surgeon Unused, but please understand that it has been stored at home before purchasing.