Velfont Acarsan Natural Waterproof Anti-acar® mattress cover. The mattress cover incorporates the Acarsan Natural® treatment made from plant extracts. It has been scientifically tested and retains its properties after washing. It combines total waterproofness with a high degree of breathability, providing a sweat-free rest thanks to polyurethane laminate. In addition, this cover provides total mattress protection isolating it from bugs and all kinds of parasites. No refunds or exchanges allowed.