Submersipack Waterproof Backpack - Submersible, Inflatable, Floating TPU Coated Durable Nylon Dry Bag with Airtight Zipper for Kayak, Fishing, Boating, Hiking, Paddle Board (Gray Stone, 18L)

The Xelfly Submersipack Waterproof Backpack is a well-made, durable backpack that is fully waterproof as long as the zippers are fully closed. It comes with a waist strap and is available in two sizes – 18L and 25L – which can hold approximately 15-16+ pounds and 18-20+ pounds of weight, respectively, while maintaining buoyancy. The backpack is not intended for use as a flotation device but has been known to hold ice and beverages. However, there are no D-rings on the shoulder strap and the inner pocket cannot fit a 13-inch laptop. On the positive side, the backpack is well-padded and comfortable, easy to close without adding the included lubricant, and significantly cheaper than other zippered waterproof backpacks. Users have praised its waterproof capabilities and buoyancy, with one reviewer saying it exceeded their expectations by being 100% waterproof. On the negative side, the zippers were difficult to use at first and the backpack's material does not feel very thick.