See-thru Sil-Nylon fabric allows you to see what"s inside. * Zippered access allows fast loading and secure storage * Convenient haul loops for grabbing and hanging * Square shape stacks great inside your pack * 5L: 1oz 8 x 5 x 4"; 9L: 1.2oz 10 x 6 x 4"; 12L: 1.4oz 12 x 7 x 6"; 16L: 1.7oz 14 x 8 x 7"