The redesigned Pearl Izumi Sun Knees 2018 provide superior protection for your knees from the sun's ultraviolet rays. The Sun Knees feature ELITE Transfer fabric with UPF 50+ ratings while having a lighter feel that allows them to be used in even warmer temperatures. The fabric also includes Pearl Izumi's Ice-fil® to help keep your legs cool while riding on warm days. The Pearl Izumi Sun Knees 2018 feature an anatomic left and right fit with grippers to help ensure that stay in place. The Sun Knees also include reflective tabs to help be seen in low-light visibility.