The waterproof nylon material with a 10,000 mm HH rating and the waterproof welded seams protect your food and sports gear even in heavy rain. This lightweight pack comes with a compact carrying bag, allowing you to unpack it in no time, making it perfect for travel, the beach, or daily commutes. The mesh shoulder straps are breathable and quick-drying. The 9-inch side pockets for water bottles and the large roll-top closure are also suitable for larger items like your new sneakers or for outdoor adventures. The adjustable chest strap with a whistle is attached to the shoulder straps, and the tapered overall profile allows for better weight distribution, ensuring that this waterproof backpack can be comfortably worn even on the longest days.