Protect your Mattress from Damp, Mould & Mildew! We all perspire when we sleep and this damp air travels through your mattress to the bed base. If there is not sufficient ventilation here this turns to condensation leading to a damp, mouldy mattress and creating an unhygienic sleeping environment. DRY-Mat is a revolutionary underlay which is simply placed under your mattress to create a layer of air-flow and ventilation keeping your mattress FRESH and CLEAN and prevent MOULD and MILDEW build up. Quick & Easy To Fit Fresh, Hygienic Beds Stops Mouldy Mattresses Machine Washable Doesn't Degrade - Lasts Forever!