**Blueshyhall 20L Waterproof Dry Backpack - Roll Top Closure, Water Repellent Duffle Storage Sack for Kayaking, Rafting, Boating, Fishing, Camping & Beach - Black | Ideal for Outdoor Adventures & Water Sports**

Blueshyhall Waterproof Backpacks are featured with strong tear resistance, large capacity and light weight. Its high quality and durable material provides good usage experience. It's suitable for most of outdoor activities, such as kayaking, boating, rafting, fishing, diving and other adventures. 100% Waterproof Constructed with 500D PVC materials and adds a PVC film on top for better waterproofing.Outer Zip Pocket on the front helps for keeping the separate necessities for your easy and quickly access.Water Drop design makes this backpack novel and special.Bottom Reflective Strip is highly visible when light touches, keeps you visible at night. Additional 2L Dry Bag Waterproof 2L Dry Bag provides second protection for your essentials such as phones, keys, wallet.You can hang this 2L Dry Bag wherever you want as long as it could be attached like backpack, luggage, ropes, bicycle,etc. ADDITIONAL FEATURES The dry backpack is double reinforced at all the major pressure points so that it's durable enough and wear-resistant. Would absolutely be your ideal choice for any water environment you may encounter! The wide padded shoulder straps plus extra chest and waist straps is very adaptable and comfortable when you pack this waterproof bag backpack. Made by High-density EVA, the rear panel is sturdy and moisture wicking. Ventilated and comfortable. And the lifesaving whistle plays an important role in case of emergencies. That means your safety is assured when outdoor hiking or climbing at night. STEPS TO SEAL THE WATERPROOF BAG Step 1 Align the straps on the top of the waterproof dry bag after stores your gear. Step 2 Roll down 3 to 5 times along the top of the bag untill you feel the air left in bag is proper. Step 3 Connect each side buckle of the bag to complete the seal. Stretch two side straps to protect the bag from leaks. Step 4 Connect the top buckle and stretch the strap to avoid your gear wet.