A mattress protector is crafted to be a barrier between you and your mattress, helping to keep it in top condition for years. It is only fair that the best mattress gets the best protection ...

They're also often waterproof (or at least water resistant ... Simba has made sure this is no ordinary mattress protector. Its quilted construction is made from a 200 thread cotton count and ...

A waterproof mattress protector ... make a digital beeling for The White Company where you can find this quilted mattress protector packed with a plush cotton filling for cloud-like levels ...

It's not water resistant or waterproof, it's not quilted, and so on. Really, this mattress protector is all about those warming / cooling properties, and what you're paying for is the Outlast fabric.