I bought this before knowing my daugther is a hot sleeper. I tore the bag open to touch the sheet material, but never pulled sheet out fully. It’s so soft and luxurious! From the guava website: The Plush Quilted Sheet has a soft, quilted velour surface is 100% polyester, and is designed to specifically fit the Lotus Everywhere Crib. We just wish we could have a plush crib sheet this soft for our own beds too! The plush baby bedding sheet is machine washable. NOTE: The Plush Quilted Sheet is designed to be used by itself, not in combination with any other sheet, and is recommended for only ages 12 months or older.