Pannier bag rack pack anzahl 2 material synthetica type cordura coating polyurethane coated capacity 40 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 colour black series ortlieb back roller