This fully Waterproof Waist Pack is also submersible to 16 feet. Constructed with RF welding of PVC-FREE nylon reinforced TPU, this waist pack (fanny pack) will be great for you and our environment. And just like the Action Sports Hydration pack, is equipped with the patented Quick-Zip for quick and easy access that doesn't sacrifice waterproof protection. Next, you'll probably notice the oversized water bottle holders with an adjustable draw string closure and a solid bottom that offer extreme durability. What might not be quite as obvious is that when attached to the Action Sports Hydration Pack, these bottle holders form the base for securing accessories such as ski poles, oars, fishing poles, fly rod tubes, hiking sticks, etc