Sparco Rib Pro K-7 Rib ProtectorThe redesigned Sparco Rib Pro K 7 provides maximum rib protection through the use of Sparco Impact Technology, a 4mm thick EPDM material mated to a 6mm PU foam, to equally protect against high energy impacts and providing vibration dampening. A fiberglass shell is then applied to this material to provide increased impact protection. Special cutouts greatly help increase breathability, while rubber edging on the shell helps reduce wear against the kart