The featherweight Sea to Summit Ultra-Mesh Stuff Sacks are the perfect solution for organizing gear in your pack or travel bag. Theyre made from a 15D multi-filament Nylon for light weight yet long lasting durability. The Black mesh allows for better visibility of contents. When not in use, these sacks pack down super small. The Ultra-Sil Nano draw-cord tunnel allows for smooth operation. Sea to Summit logo label and size label can be used to pull stuff sack open. Double stitched and reinforced seams throughout for greater durability. Round base design for better packing. The Ultra-Mesh Stuff Sacks are available in multiple sizes and are ideal for ultra lightweight packing organization.