The legendary Boundary Pack is perfect for everything from canoeing and canyoneering to protecting your gear on trains, buses, and burros. It features our watertight Dry Seal roll-top closure, along with a heavy-duty, 30-ounce scrim-reinforced vinyl bottom and 19-ounce scrim-reinforced vinyl body. A lightweight suspension system includes waterproof and ventilated shoulder straps, as well as a waist belt on every size. Available in three sizes: The 115L and 70L sizes close with side-cinch buckles, while the daypack-size 35L includes a top buckle closure. Removable Suspension: Ideal for moderate loads or heavier ones on short hauls. Reliable Protection: Dry Seal roll-top Closure ensures the best watertight seal possible. Built Tough: 19 oz. scrim-reinforced vinyl side with heavy duty 30 oz. scrim-reinforced vinyl bottom. Extra Security: Side cinch straps add peace of mind and secure compression with big loads.