The Friendly Swede 25L Ultralight Durable Packable Backpack Daypack - Foldable to Pocket Size Lightweight & Spacious: This incredible backpack only weighs 240 g but has the capacity of 25 L (6.60 gallons). The perfect pack for traveling and hiking. Foldable: The backpack is easily folded into a small pocket when not in use. When fully open and used in backpack mode, the pack is 18 (46cm) x 12 (31cm) x 7 (18cm). When folded for storage, it is a handy, compact size of 6 (15cm) x 6 (15cm) x 2 (5cm). High Quality: The Friendly Swede Foldable Backpack is made of high quality, 210D grade, rip-stop nylon. The zipper is an SBS zippers which assures better quality. Lifetime Warranty: This product is covered by The Friendly Swede's Lifetime Warranty Avoid leaving it in direct sunlight for long periods If you need to wash your pack, use mild detergent and hang dry Wipe if off after visiting a beach or swimming pool When put in storage pocket the backpack must be completely dry. Let it hang and dry indoors after a long day of discovering!