1.Waterproof process PU coating, full-line lamination process and professional waterproof roll-up design greatly improve the water repellency and durability of the fabric, ensuring that the items in the bag remain dry. At the same time, it can also effectively prevent stains and sand. 2.Lightweight and Portable The total weight of the waterproof bag set is about 190 grams, and it is foldable, which can be folded up when not in use to save space for easy portability. Will not increase the burden of luggage. 3.Multiple sizes There are 6 dry bag rucksack in total, and there are 6 sizes, which are convenient for you to store items of different sizes or categories. 4.Applicable occasionsGreat for travel, backpacking, kayaking, fishing, camping, boating, canoeing, sailing, rafting, hiking, skiing, home and more.(NOT suitable for diving!) 5.Wide range of uses Not only can be used as a waterproof bag in wet or rainy days. It can also be used as a storage bag for snacks, books, wallets, documents, watches, jewelry, etc. It is the first choice for outdoor travel.