Ayrtek Hybrid PRO Sweatband- White Jumbo Size 5"The Hybrid PRO sweatband combines a dual layering system of leading impact protection material from D3O and an additional high impact plastic outer layer, compared to the stock model, that is then integrated into a sweatband to offer you a dual purpose product. Protection Provided by D3O D3O offers the thinnest and most advanced protection against impact. The market defining products containing D3O are used worldwide by soldiers, professional