Overview Our Unit Sling Bag is part of our new bag release that features a body-wrapping design for increased comfort and a more streamlined look. Multi-pleated and darted construction allows for expansion to occur when the bag is filled up. Main compartment features three pleated mesh sleeves and small D-Ring for key attachment. Back of the bag features a quick access zipper pocket for small items. Right support bumper is constructed with our 1.5" webbing mount system that allows the user to attach pouches and accessories. Built-in V-Buckle strap for jacket or accessory storage. Comes with a 1.5" Quick Release Fidlock Shoulder Strap. This version is made with two different external pack fabrics: 1.) Challenge Sailcloth ECOPAK™ EPX 200 Fabric: made with 100% recycled polyester components; this a 3 layer fabric with 200D polyester face with C0 DWR coating, 45º CrossPly reinforcement, and 70D ripstop backing. 2.) 420D ROBIC® Nylon Fabric: high strength ROBIC® nylon 6 threads woven into a square grid ripstop, with UTS (Ultra Tear Strength) polyurethane coating. Made entirely in the USA. Learn about our Lifetime Guarantee. Specs Exterior Fabric: Challenge Outdoor ECOPAK™ EPX 200 - Ranger Green 420D ROBIC® Nylon Fabric - Black Exterior Dimensions: 18" x 8.5" x 3.5" Lining: 420D Nylon Packcloth Fabric w/ DWR coating Weight:  14 oz Capacity: 6L Add-ons Recommended Add-ons: Accessory Cases Bottle Case CapSnap Eye Glass Case Fidlock Key Chain Gated D-Rings Mini Zipper Pulls Padded Mesh Strap Tac Link Unit Fidlock Pouch Unit Zipper Pouch Utility Strap Zipper Pulls More Info 1 ABOUT RESEARCH AND DEVELOPMENT/RND This line represents experimental and innovative projects from the DSPTCH design team, allowing them to step outside the guard rails of a traditional product line. These products are meant to push the boundaries of functionality and in exchange, provide new ideas and options that define and shape the future of DSPTCH products.