The StraightJacket Compression Sack keeps your gear organized and protected within your pack or travel luggage, available in four different volumes with a rectangular-shaped compression option for more efficient packing. Key Attributes: BUILD YOUR OWN PACKING SYSTEM Part of a coordinated system for optimized packing. Customize your experience by adding on smart packing and organization accessories that meet your exact needs. OSPREY ACCESSORIES INNOVATION All of our accessories have been overhauled to offer better organization, operation, comfort and reduced environmental impact. SUSTAINABLE DESIGN + bluesignA(R) approved main body fabrics+ GRS-certified 100% recycled main body fabrics Features: Large access Compressible nylon wings and buckles Rectangular shape for efficient packing Specs: 8 Liter:- SIZE VOLUME DIMENSIONS WEIGHT O/S 488 IN3 / 8 L 5.91H X 15.35W X 4.72D IN. 0.123 LBS. FABRIC MAIN: a bluesignA(R) approved 100% recycled 40D high-tenacity nylon 12Liter: SIZE VOLUME DIMENSIONS WEIGHT O/S 732 IN3 / 12 L 8.27H X 16.14W X 7D IN. 0.146 LBS. FABRIC MAIN bluesignA(R) approved 100% recycled 40D high-tenacity nylon 20 Liter: SIZE VOLUME DIMENSIONS WEIGHT O/S 1220 IN3 / 20 L 11.02H X 17.32W X 8.66D IN. 0.201 LBS. FABRIC MAIN bluesignA(R) approved 100% recycled 40D high-tenacity nylon