Ultimate sheet fastener. The Better Bedder is not like other sheet fasteners that come on and off with your sheets. Put the Better Bedder on your mattress once and never remove. It becomes a part of the mattress. You don't sleep on it so it does not need to be washed. Wraps around mattress and you simply tuck your sheets from the top. Never lift your mattress again to tuck sheets underneath. Works with your current fitted and flat sheets. Your sheets stay put and will not come loose during the night. Also, use side pocket to store phone, glasses, remote, book, etc. Great for the disabled, or those who struggle with fitted sheets.