The all-new Mainstays NexGen anti-microbial fitted mattress protector is an innovative and stronger fabric alternative to vinyl mattress cover. With no toxic odors Mainstays NexGen fabric provides water stain and spill physical barrier and is also hypoallergenic! For a stress-free solution to long lasting mattress care Mainstays NexGen is the way to go! This mattress cover has a fitted 360? elastic that keeps your cover in place. Available in Twin Full Queen and King sizes.