Features: Based on the original Peak Design Packing Cubes, streamlined to essential functionality Ultralight Terra Shell(TM) material provides high durability and weatherproof performance Weatherproof face and back coatings with taped seams keep contents fully dry #5 UltraZip(TM) zipper built with abrasion-resistant thread for long-term reliability Convertible to an ultralight sling using an adjustable carry strap or Peak Design camera strap (not included) External carry strap pass-throughs allow mounting on any Peak Design bag Cord Hook(TM) loops function as counter-pulls for smooth opening and closing Folds completely flat when not in use; can be rolled and cinched with the elastic zip pull cord Compact enough to keep multiple cubes in a pocket or bag for versatile everyday use Made from 100% recycled, bluesign(R) approved, PFAS-free materials Fair Trade Certified construction Backed by Peak Design's lifetime guarantee