Materials Body: 7.3-oz 400-denier 100% postconsumer recycled polyester with a PU coating and a PFC-free DWR finish (durable water repellent coating that does not contain perfluorinated chemicals) Lining: 3-oz 200-denier 100% recycled polyester with a PU coating Back panel and shoulder strap: 8-oz 100% recycled polyester spacer mesh Strap pocket: 7.1-oz 84% recycled nylon/16% spandex power mesh Webbing: 100% recycled nylon Weight 340 g | 11.99 oz Dimensions 13.5 x 9 x 3 in Capacity 8L | 488 cu in All fabrics, spacer mesh and static mesh are 100% recycled (stretch mesh is 84% recycled), body has a PFC-free DWR finish (durable water repellent coating that does not contain perfluorinated chemistry); pack volume is 8 liters Asymmetrical sling carries weight close to the body for all-day comfort Larger front pocket keeps a phone or other frequently used item close at hand Internal divider in main compartment Two main compartments with dedicated storage for easy access Tuck-away front straps for carrying a yoga mat or an extra layer