A 0.7mm layer of thermoformed carbon is overinjected with a carbon reinforced Nylon to create the shell, which includes WING FLEX™ and TAIL FLEX™ technologies. EVA foam provides support and comfort, while a Microtex cover with Cordura protection guarantees durability and abrasion resistance. Combined with a braided carbon fibre rail, these next gen technologies, brings the overall weight of the Gobi M1 to a low 155g. Carbon Braided Rails Rather than a conventional solid or tubular rail, fi'zi:k's rails use an outer sleeve of braided carbon fibers forming a tube, with the void inside being filled by unidirectional carbon fibers. This construction is strong, light and stiff. Wing Flex Technology Wing Flex shell has engineered flexibility along the edges where the inner thighs contact the saddle. By allowing this area to flex, the rider can achieve a full range of leg movement in a wide range of riding positions. Wing Flex allows the saddle to adapt to the rider rather than the rider having to get used to the saddle.