Backpacks, Bags & Accessories by Sea to Summit. Details:The Sea to Summit Ultra-Mesh Stuff Sack provides a featherweight option for packing gear and clothing for ultralight backpacking, camping, hiking, and travel. Manufactured from 15D multi-filament nylon mesh, with a 15D Ultra-Sil nylon drawcord sleeve for durability and smooth operation. Mesh is black for better visibility of bag contents. The Sea to Summit Ultra-Mesh Stuff Sack has a round base with a webbing pull handle for easy carry. Seams are double stitched and reinforced for durability. Available in seven sizes: 2.5 liter, 4 liter, 6.5 liter, 9 liter, 15 liter, 20 liter, and 30 liter to carry everything from small essentials to group gear.