Using this mattress topper is easy. Just place it on your long single bed over the existing mattress. The deep - fitting walls will keep it in place. When it comes to cleaning, you can simply toss it in the washing machine as it's fully machine - washable. For best results, use a gentle cycle and mild detergent. As for storage, make sure it's dry before folding and storing it in a cool, dry place. If you notice any stains, try to spot - clean them as soon as possible. This topper is allergy - sensitive, so it's important to keep it clean to maintain its hypoallergenic properties.