Made of natural bamboo and polyester with a soft quilted peach microfiber layer for comfort, this 5" Waterproof Bamboo Terry Cloth Crib Mattress Cover is one of the top mattress covers on the market. One prime feature of this protector is that it is waterproof. It can hold and absorb more than 42Oz of moisture or liquid while keeping your mattress dry and wicking away moisture from your baby. Another great and unique feature of this mattress pad is a soundless dual layer of waterproof material that is blended with more soft peach microfiber so you will never hear any annoying crinkly plastic noise. This protector is breathable and hypoallergenic, preventing bacteria and mold from breeding in your baby's mattress. Designed like a fitted sheet, this protector stays in place and easy to take on and off. It fits a standard crib mattress of 28" x 52" and can fit mattress heights up to 5". NATURAL BAMBOO FIBER COVER: No crinkly plastic! EASY CARE: Machine wash and dry on low heat CRIB COVER: 210gsm bamboo viscos terry - FILLING: 120gsm polyester - BOTTOM: 20gsm nonwoven fabric. The above 3 layers quilted together then laminated with waterproof layer TPU and 60gsm single jersey fabric - PAD LINER: 1st layer: 210gsm unbleached bamboo terry towel (70% bamboo 30%polyester), 2nd layer: waterproof TPU film and 3nd layer: 60gsm single jersey fabric