North 49 Compression Bags Bag folds into its own compression bag top flap, held with hook and loop closure • Vertical compression via 4 straps and buckles • Two quick release buckles holds lid snugly onto top of bag for powerful compression • 210 denier nylon fabric Sizes: Small: 8"x 17" ( 20 x 43cm) Medium: 9"x 18" ( 23 x 46cm) Large: 10" x 20" (25 x 21 cm) X-Large: 11"x 21" ( 28 x 53 cm)