Ergon gp1 bioleather gripsbrand new premium leather grip innovative in mould leather technology designed in co operation with bespoke footware maker quoc pham using leather sourced in bavaria germany following strict rules regarding toxins the alpine raw hide leather is dyed using vegetable dyes and no heavy metals are used in its production the leather is open pore and is certified hypoallergenic available in a single size features model for regular shifters size one size material