The Ultra-Sil Stuff Sack Set 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 And Are Available In Several Great Colors. The Slippery Fabric And Secure Grab Handle At The Base Are For Effortless Sliding In And Out Of Packs.Features:- Water-Resistant, Bluesign® Approved Ultra-Sil 30d Nylon Fabric With A Pfc-Free Dwr Finish- Unique Tear-Proof Drawcord Throat With Two Super-Strong Hypalon Pull-Tabs For Easy Operation- Ultralight And Super-Strong, Bluesign® Approved Ultra-Sil 30d Cordura® Nylon Fabric Has A 2000mm Hydrostatic Head- Double-Stitched And Reinforced Stress Points For Added Strength And Durability- Slippery Fabric And Secure Grab Handle At Base For Effortless Sliding In And Out Of PacksSpecifications:- Dimensions: 8l: 12.8 X 7.8- Weight: 2.7 Oz- Volume: 8lTechnology:30d Ultra-Sil:- An Incredibly Lightweight Yet Durable Fabric Used In A Large Number Of Sea To Summit Products. This 30 Denier Nylon Is Made With Cordura® Yarns For Strength, Woven Into A Ripstop Pattern. Two Versions Of The Fabric Are Used:- Water-Resistant Products (Such As The Ultra-Sil™ Stuff Sacks) Are Siliconized On Both Sides For Ultimate Packability- Waterproof Products (Such As The Ultrasil™ Dry Sack Are) Siliconized On The Outside And Pu-Coated On The Inside To Allow Seam Taping.- Both Versions Have A Hydrostatic Head Greater Than 2000mm – Which Makes Them More Than Adequately Waterproof For The Types Of Environments They Are Intended For.