Crizzio Mattress Toppers are made of premium quality 100% polyester fiber for a cozy feel, providing extra plush padding and support. Filled with 100% polyester virgin hollow fibre, these toppers feature elasticized corner straps for a snug fit and consistent comfort, preventing slippage. They are approximately 4 inches or 10 cm thick and come in various sizes to fit your mattress perfectly. Made from hypoallergenic material, they help prevent allergy-causing bacteria and dust mites, making them ideal for allergy sufferers. Maintenance is simple: machine washable below 40 degrees with similar colors using a gentle wash cycle. Add comfort without worries.