Firm 100% polyethylene open cell foam for long-lasting reliability. Made with water-resistant and UV protected outdoor grade fabrics. The heavy-duty Velcro closure system allows for quick attachment or removal. Pads secure around the Pro Canoe / Kayak / SUP Carrier - by Front Runner. A single carrier bracket provides a wide 600mm / 23.6'' surface for a range of uses and extra protection. Sold in pairs.