Protect your investment with the Vispring Under-Mattress Pad, a durable, natural wool pad designed to sit atop any slat-style bed to prevent wear, friction and moisture from damaging the mattress. Edged with brass eyelets and string ties, this breathable protective layer secures easily to the slats, ensuring that it won't shift or bunch. Like all of Vispring's products, it's handcrafted in England of superb materials with careful attention to detail.