When the fishing or hunting is at its best and the weather at its worst, the gear that you depend on must be kept dry. Our waterproof fly fishing backpack, built with heavy-duty 840D nylon TPU materials waterproof zipper and industry-leading manufacturing technology, delivers reliable, waterproof protection to keep water outside, where it belongs. Built with tough 840-denier nylon tarpaulin fabric coated with thermoplastic polyurethane (TPU), water simply cannot penetrate it. The advantages of using a nylon fabric with this coating rather than polyester or canvas are lightness of weight, flexibility and abrasion resistance. The highly-flexible TPU coating is resistant to ultraviolet light and chemicals, ensuring durability and longevity without breakdown from hard use. The seams are high-frequency (HF) welded, a cement-free process that permanently fuses the fabric layers together, assuring flexible integrity without fail. All webbing and padding is securely stitched to an additional layer of the waterproof fabric, which is then HF-welded to the bag’s body. The front hanging system is good for accessories to be tight on it.The waterproof fly fishing backpack – built to comfortably carry heavy loads in the field or on the water while providing 100% waterproof protection to keep your gear dry.