Barrier Dry Sack

Keep everything absolutely dry with the Outdoor Research's Barrier Dry Sacks. Even if your gear takes a spill into a glacial stream or mountain lake, it'll stay dry within the waterproof nylon fabric that's fully seam taped so that not a drop of water finds its way in.

Features:

Keep your gear, clothes, down sleeping bag, and sleeping pad dry in the waterproof nylon fabric and fully taped seams
Once you've packed everything in, secure the roll-top waterproof closure with the durable buckle

Specifications:

Capacity: 398 cu in (Size 1); 646 cu in (Size 2); 971 cu in (Size 3); 1710 cu in (Size 4); 2259 cu in (Size 5); 3364 cu in (Size 6)
Weight: 1.7 ounces (Size 1); 2.1 ounces (Size 2); 2.5 ounces (Size 3); 3.2 ounces (Size 4); 3.7 ounces (Size 5); 4.5 ounces (Size 6)
Dimensions: 17 5/8 x 6 inches (Size 1); 20 1/8 x 7 inches (Size 2); 22 5/8 x 8 inches (Size 3); 25 1/4 x 10 inches (Size 4); 27 1/4 x 11 inches (Size 5); 29 x 13 inches (Size 6)
Material: nylon