Easy to use: The latest advanced double air valve is easy to inflate and deflate. It is only inflated by the upper air valve, and it can be emptied only by releasing the lower valve without worrying about the air cushion. Multi-functional design: The multi-functional design can perfectly support and raise the legs and knees when sleeping, lying or sitting, so as to relax the neck, shoulders, back and abnormal body pressure. Practical: Elevating your legs can help prevent blood stasis and varicose veins. It can not only reduce the pain caused by lagging legs, but also keep the body in the best posture for better recovery. Comfortable to use: PVC coated with velvet is comfortable to the touch, washable and easy to clean (wipe with a damp cloth). Valve design: The new valve design is easy to inflate and deflate in office or home use, making it easy to travel, saving space, and can be easily inflated anywhere and any place, the folding size is about 10*20*16 inches.