Body-mapped, impact-absorbing SmartFlexĂ– pads layered on top of a ventilated, soft inner foam layer allowing for maximum protection, comfort and breathability SmartFlexĂ– protection is flexible as you ride, yet hardens on impact in the event of a crash Soft inner foam keeps pads comfortable on your knees and also adds another layer of protection SmartFlexĂ– pads offer form-fitting and lightweight protection that is flexible as you ride and hardens on impact Compression sleeves with grippers at the top and bottom to keep guards in place Moisture-wicking, UPF 50+ fabric Machine washable. PRO-X3 KNEE GUARD BLK XL