Sea to Summit Ultra-Sil Duffle Bag (40-Liter) 10.5 gallons/40 Liter volume capacity and strong enough to carry a heavy load Ultra light, weighs only 2.82 ounces/80 grams Ultra-Sil fabric for packability, strength and durability Bar tacked, reinforced stitching at key stress points Fits snugly in the accompanying stuff sack with a Hypalon key ring attachment