WildGrow 5-in-1 Waterproof Backpack 30L with Compression The Ultimate Sack for Camping, Travelling, Canoeing, Kayaking and Gifts for Adventurers PROTECTION IN WATER, SNOW, SAND and DIRT: Strong non-rip and puncture proof tarpaulin material with roll-top closure, will keep your essensials 100% dry while you are on boating, kayaking etc water sports. And will also protect your phones, cloth, snacks from sand, dirts while playing on beaches. INFLATION and COMPRESSION VALVE: You can use the VALVE to inflate the bag so you can put more stuff and it will float on the water while on water sports, and the case of a rucksack bag unexpected submerge into water so all your belongings disapper won't happen longer. After using, just open the valve to compress and folding the bag, it will change to little volume so you can put it every corner of your home NEW LARGER 30L SIZE: We've tried the 10L and the 20L backpacks. But they're just not big enough. With our 30 Liters - 8 gallons - 1,830 cubic inches dry sack you can pack in at least 2 sleeping bags with room for more. LIFETIME GUARANTEE: You wouldn't expect your expedition partner to quit after one trip, would you? No, sir! Our Dry Backpacks are so well-made we guarantee them for life. If it goes saying that our product doesn't arrive in perfect condition, we offer an immediate replacement or full refund - Yes, risk-free money back guarantee.