Key upgrades 840D Naylon, improves protection: kidney, hip, thigh, FlexForward kidney hernia. Spine Independent spine with Vent Armor foam. Kidney One-piece with Flex Forward Break. Hips One-piece hip protection in a classic fit. Thigh protection Molded PE and HD foam, removable for subsequent embellishment. Belt Wrap belt with side buckle. No design template Key upgrades 840D Naylon, improves protection: kidney, hip, thigh, FlexForward kidney hernia Spine Independent spine with Vent Armor foam kidney One-piece with Flex Forward Break hips One-piece hip protection in a classic fit Thigh protection Molded PE and HD foam, removable for subsequent embellishment belt Wrap belt with side buckle.