Sea To Summit Ultra-Sil Stuff Sack XXL - Siliconized nylon stuff sacks are not only super strong and lightweight, theyre an absolute must-have in specialty retail stores. We use a super light, Ripstop Cordura in a range of colors. And our eye-catching packaging really shows off the compact size of these sacks. Made of 30D Diamond Siliconized Cordura. Three times lighter than typical stuff sack fabrics, The fabric is impregnated with silicone to make it waterproof to a pressure of 2.8 psi, Fabric has a slippery finish for easy packing, Reinforced pull handle on bottom, Uses the smallest possible cord and cord lock for top closure, Bar-tack reinforced in all stress points, All seams are double stitched for extra strength, Comes assorted in several great colors: Blue, Gold, Red, Green, Grey, Black & White.