These zippered vinyl mattress covers fully encase your mattress for ultimate protection and stays in place underneath your regular sheet to reduce wear and tear to your mattress. The 8" deep mattress cover fits a standard depth mattress. Protects and extends the life of the mattress. Waterproof sheet protectors help to eliminate the worries of damaging mattresses due to night-time accidents and incidents. Includes: 1 Twin Standard Vinyl Mattress Cover Size: 39” x 79” x 8” Zippered vinyl mattress cover protection for your bed Keeps your bed clean and fresh