Are you using the TieYak Z-Racks outside and the extra security against wind? These are a completeblack UV-resistant webbing safety strap kit with hardware to mount them to your Z-Rack for SUP’s and Kayaks. Created byTieYak division of Suspenz Instruction Sheet Includes: UV Resistant black webbing with durable side release buckle Plastic Web Caps and Steel Web brackets to hold webbing in place with hardware