The Ultra-Sil Stuff Sack is an ultralight but durable solution using a water-resistant, bluesign approved Ultra-Sil 30D nylon fabric with Non-PFC DWR finish. Ideal for organizing gear in your pack or bag, these stuff sacks incorporate a reinforced pull handle on the base, a easy to operate drawcord with Capture Cord Lock. The slippery fabric and secure grab handle at the base are for effortless sliding in and out of packs.