We really recommend using a Casper Mattress Protector or QuickCool Protector to protect your Casper Mattress. Doing so will not only increase the mattress' lifespan, but it will make life a lot easier!
The warranty will not be affected whether or not you have a mattress protector. However, the warranty does not cover stains, burns, tears, cuts, or liquid/moisture damage resulting from use by customer or their environment. Visit our warranty terms and conditions for more information.