A 20-litre backpack is the classic size for a day hike: room for a rain layer, food, water and a first aid kit. A waterproof one keeps all of it dry in a downpour. Our 20L to 25L options include the 20L dry backpack in 600D TPU and the 25L hiking waterproof backpack, both with roll-top closures.
For choosing a size, see our waterproof backpack capacity guide, or browse the full waterproof backpack range. We have made waterproof bags for over 20 years at our factories in Dongguan, China and Ho Chi Minh City, Vietnam, and every model can be made in your colours and with your logo for OEM and ODM orders. Contact info@sealock.com.hk.