The Discovery Adventures Dry Bag is ideal for all types of outdoor activities, including water-based adventures thanks to the 100% waterproof design. Zippered Front Pocket: Allows for easy access for you to grab important items without having to unroll the top main compartment. The front zipper gives easy access to keys, outdoor tool, card and other personal items you need to grab quickly on the go. If you want to take it under water, please store your stuff in main compartment of waterproof backpack. 100% Waterproof Guarantee: Solid roll-top closure system provides secure watertight seal. Keep your gear dry in any wet situation where the bag is not fully submerged. Protect your valuables from water, snow, mud and sand. Durable 600D PVC: Infinity Sun waterproof dry bags was made of 600D PVC ripstop tarpaulin with sturdy welded seam which is designed for years usage, tear, rip and puncture proof. Perfect for almost any extreme adventure you imagine. Adjustable Shoulder Strap: Made of premium and soft nylon material, built to be comfortable and flexible. with this long shoulder strap, you can easily adjust any length and angle to fit you well. Infinity Sun waterproof dry bag will definitely provide you a comfortable experience, instead of cheap material and causing your shoulder hurt.