Leatt Knee Guard Rea Flex Ultra Lite Ultra-lightweight, Ultra-Protective. The Leatt Rea Flex Ultra Lite Knee Guards are an ultra-lightweight, impact gel-based knee protection system for riders who can't be weight down, but who need impact protection for the fastest trails. At the core of the Rea Flex Ultra Lite Knee Guards is the Rea Flex impact gel pad, a flexible and impact-absorbing pad that fits into an abrasion-resistant mesh pocket in the guard. This padding creates a flexible, lightweight, and comfortable system that offers impressive protection from harmful impact forces, while maintaining effortless freedom of movement. Ventilated premium mesh keeps the air flowing, while silicone grip panels and an extended leg sock keep the guards in place no matter how far you pedal. Features Rea Flex impact gel sits in a mesh pocket and offers flexible, lightweight impact protection Ventilated design with premium mesh for exceptional airflow Abrasion resistant patch over knee for added durability Silicone patch and extended leg sock keeps the guards secured without the need for adjustment straps Total Leatt(R) protection score of 10 points CE-certified for added peace of mind Sizing Size Small Medium Large XLXXLThigh Circumference (cm)33cm - 37cm37cm - 41cm41cm - 47cm47cm - 53cm53cm - 59cm Calf Circumference (cm)25 - 29cm29 - 33cm33 - 38cm38cm - 44cm44cm - 51cm | Leatt | Knee Guard Reaflex Ultralite Men's | Size Extra Large In Black