Pannier bag rack pack anzahl 1 material synthetica type cordura coating polyurethane coated capacity 20 litres attachment quick lock 21 material properties dirt resistant water repellent safety features reflective print fastener roll closure innenaufteilung main compartment outside pockets mesh pocket dimensions w x h x d 42 x 2332 x 17 cm weight 1 680 g colours black yellow series ortlieb back roller