Description Features LAYERED MEMORY FOAM This pad features shock-absorbing, soft memory foam that alleviates pressure on the knee, foot, and ankle HOT OR COLD THERAPY The removable gel pack can be frozen or microwaved for hot or cold therapy, to alleviate swelling, tension, and pain LONG LASTING AND DURABLE DESIGN The knee walker cover retains its shape and cushioning over time, without flattening after repeated uses EASY INSTALLATION AND SECURE FIT A strong elastic cover slides seamlessly over your knee rollator or walker for a secure fit that stays in place during activity HASSLE-FREE CLEANING After removing the gel pack and foam padding, hand wash this cover on cold with mild detergent and hang it to dry ALLEVIATE PAIN AND PROMOTE RECOVERY With this thickly-padded cushion, you can ensure that your knee remains free from stress and strain, for a more comfortable knee rollator or walker experience