The 3D breathable honeycomb structure of the mattress protector provides air and moisture permeability. Soft and lightly padded the product has an absorbent backing to protect the mattress from liquids and build-up of bacteria. Our Cot/Cot Bed Breathable Mattress Protector is universally sized to fit most cot beds, 100% waterproof and machine washable, rendering spillages obsolete. Please note, this protector is designed to cover the central sleeping area of a cot bed mattress (not edge-to-edge).