Protect-A-Bed CumfySafe Tencel Mattress Protectors are a fitted sheet style protector with a non toxic, one way membrane providing waterproof yet breathable protection. The surface next to the skin is made from Tencel, a eucalyptus based fibre which is cool, absorbent, and free from any pesticides or agricultural chemicals. These protectors are comfortable & soft, clinically tested for sensitive skin and hypo-allergenic. They are anti-bacterial, preventing bacteria, mould, & dust mites from breeding in your mattress. A fitted sheet style protector suitable for warm machine wash & tumble dry.