Style NF0A52SG53Z With a 31-liter capacity, the Surge Backpack is a spacious, streamlined pack you can take almost anywhere. Clever design features like a water-repellent finish, 15&';&'; laptop sleeve, and the ability to stand unsupported make it indispensable. Features 360-Degree Reflectivity Bottom Compression Comfortable, Padded Top Grab Handle Daisy-Chain Webbing Offers Lash Points External, Fleece-Lined Pocket For Sunglasses, Phone Or Keys Front Compartment Has Internal Organization With Secure-Zip Pockets And A Padded Tablet Sleeve Large Main Compartment For Books And Binders Protective Dedicated 16&';&'; Laptop Compartment Removable Waist Belt Stand-Up Design For Easier Loading And Unloading Sternum Strap With A Whistle Buckle The FlexVent(TM) Suspension System, Certified By The American Chiropractic Association, Has Articulated Shoulder Straps, A Rounded Back Panel, Comfortable Stitch Lines And Soft-Touch Chemise Fabric Two Durable Water Bottle Pockets Can Easily Double As Multi-Use Pockets With Quick-Draw Smartphone Access On One Side Two External J-Zip Pockets, One Lined With Fleece Women-Specific Version Available Details Heather 300D Heathered Recycled Polyester Ripstop With Non-PFC DWR Finish Solid 210D Recycled Nylon Ripstop With Non-PFC Durable Water-Repellent (Non-PFC DWR) Finish Sizes One size Avg Weight 2 lbs 12 oz (1260 g) Dimensions 12&';&'; x 7&';&'; x 20&';&'; (30.5 cm x 17.8 cm x 50.8 cm) Volume 1892 in^3 (31 liters) Laptop Sleeve 15&';&'; x 11.5&';&'; (38.1 cm x 29.2 cm)