Made with heavy-duty, highly water-resistant nylon, the Compression Sack from Sea to Summit compresses your belongings for easy stowage.. . Flip-Top-Lid design prevents strap tangling. Made of heavy-duty 210D PU-coated nylon. 4 straps for even compression; eliminates bulging. Extra long straps so its easy to fill these to max capacity. Nylon webbing pull handle on bottom. Black body with trim in assorted colors. 30 liter bag compresses to 10 liters. 9327868001927 19343500031 170