Technical Specs + Materials Weight: 2.68oz (76g) Dimensions: 7 X 4 X 2in (17.78 X 10.2 X 5.08cm) Materials - 100d Bluesign® Recycled Nylon, Pu Waterproofing - Pu Coating: Waterproofing - Non-pfc Dwr Finish - 70d Bluesign® Span Faq Which Backpacks Will The Speed Stash™ Fit? All Backpacks That Have A Sternum Strap, Included Our Packable Bags. How Do I Attach To A Backpack Strap? The Speed Stash Is Fast And Simple To Install, We Suggest Wrapping It As Tightly As Possible To Allow The Locking Bars To Engage And Eliminate Slipping. Please Refer To Below Demo Video. Will The Speed Stash Fit My Phone? Yes, The Speed Stash Fits Most Cell Phones, Even Larger Ones. Please Refer To Dimensions. Does This Product Have A Warranty? Yes, This Product Is Warrantied For 3 Years.