PD 350 dry bags are fully featured and great value. Proven roll closure and single stiffener bar ensure 100% waterproofness, protection and optimal packing volume. A reinforced base provides stability and easier loading. Closure of PD350 dry bags must be rolled at least 3-4 times. Please add 15-20 cm/5-8 in. for the total length. Ortlieb Packsac Drybag Pd350 59l L | Dry Bags | George Fisher