Sea to Summit Ultra-Sil Stuff Sack - The Ultra-Sil Stuff Sack is an ultralight but durable solution using a 30D siliconized CORDURA fabric. Ideal for organizing gear in your pack or bag, these stuff sacks incorporate a reinforced pull handle on the base, a durable pull tab at the top and are available in several great colors. Fabric has a slippery finish for easy packing The fabric is impregnated with silicone with a 2,000mm hydrostatic waterhead Hypalon pull tab at top Reinforced pull handle on bottom Uses a light and compact cord and cord lock for top closure Bar tack reinforced in all stress points