3-Liter: 11" x 7" x 4"; 5-Liter: 15" x 7" x 4"; 8-Liter: 17" x 8" x 5"; 13-Liter: 20" x 9" x 6"; 20-Liter: 24" x 11" x 7"; 35-Liter: 28" x 13" x 8"; 65-Liter: 33" x 15" x 10" * TPU laminated fabric with 10,000 mm waterhead * Super strong and abrasion resistant 420 D nylon fabric * Waterproof, double stitched, reinforced, tape sealed seams * Hypalon lash loops for secure attachment or stacking