This wonderfully soft and natural cotton mattress pad will protect your mattress and provide excellent cooling comfort at the same time. The secret is breathability - the  cover and fill are both of 100% cotton. Because cotton breathes so well, it doesn't radiate back heat like synthetic pads do. This means a cooler, more restful sleep for you. Stretch to fit side walls, machine washable, long lasting.240 thread count100% cotton mattress padSoft & breathableNaturally coolingAll-natural cottonFeatures: Stain Resistant, BreathableBed Size: KingBase Material: 100% CottonMattress Pads & Toppers Type: Mattress PadsCountry of Origin: Imported Cottonloft® Non-Overheating Cotton-Filled Mattress Pad