Bunji draw cord with cord lock and 2 plastic hooks (top & middle) to secure cover tightly on pack * Attached stow pouch with Velcro closure * Reflective Logo for additional nighttime visibility * Made from 70D, SPU coated, 190 thread count, Rip stop nylon * SMALL: 15 - 30 Liter/900 - 1800 cu. in.. Weight: 2.2 oz. Dimensions: 20" x 11" x 8",. LARGE: 25 - 50 Liter/1600 - 3000 cu. in. Weight: 3.2oz. Dimensions: 28" x 16" x 9"