Features: Knee protection designed for every rider, from beginner to veteran SmartFlex(TM) protection lets you ride comfortably and hardens on impact in case of an accident Body-mapped, impact-absorbing SmartFlex(TM) pads layered on top of a ventilated, soft inner foam layer allowing for maximum protection, comfort, and breathability Soft inner foam keeps pads comfortable on your knees and adds an additional layer of protection Fabric is moisture wicking and offers UPF 50+ protection to keep you safe in any setting Compression sleeves with grippers at the top and bottom help keep your guards in place PPE II certified and compatible for BMX riding Machine washable