All of the camelbak packs are designed to take a beating but none more than the camelbak kudu 12 hydration pack the narrow gauge counterpart to the kudu 18 this pack is built for the enduro racer looking for a lightweight combination of hydration protection and cargo the flexible back protector panel absorbs over 94 of impact in a crash and is designed to handle multiple blows the impact protectortrade is made of flexible lightweight foam that moves with your body so yoursquo