Pannier bag rack pack anzahl 2 material polyester types pd 620 ps 490 coating pvc coated capacity 40 litres attachment quick lock 1 material properties dirt resistant waterproof safety features reflective print fastener roll closure innenaufteilung main compartment dimensions w x h x d 42 x 2332 x 12 cm weight 1 520 g colour black series ortlieb back roller