- CARBON: 900D polyester heather plain weave with water repellent finish bluesign approved material|GREYSCALE: 300D polyester heather plain weave with water repellent finish / 400D nylon polyester heather plain weave with water repellent finish bluesign approved materials|HOXTON: 600D polyester yarn-dyed woven with water repellent finish bluesign approved material|NIGHT SKY: 500/1000D nylon heavyweight canvas with wax finish|200D Jersey Knit / 600D Polyester ( Circuit )|600D bluesign approved Polyester Heather ( Carbon )|300D Polyester Ripstop ( Rincon )|1953 cubic inches [ 32L ]|21 x 13.5 x 7" [ 53 x 34 x 18cm ]|Fits most 15" laptops (15.5" x 11") (39.37cm x 27.94cm)|Limited Lifetime Warranty|Price varies by fabric|Ergonomic foam backpanel and shoulder straps with breathable triangle mesh|Adjustable sternum strap|Backpanel integrates with travel bags|TSA compliant padded laptop sleeve compartment with organizer pockets|Fits most 15" laptops|Fleece lined iPad sleeve|Headphone Pocket|Expandable ripstop pocket with cable management|Multiple accessory pockets|Taped quick access pocket|Hidden web detail|Expandable ripstop side pocket|Fleece lined sunglass pocket|Molded top handle