Dimensions - 20" x 12" x 5.5" (51cm x 30.5cm x 14cm) Volume - 21.5L. Recycled Nylon Exterior with Water Repellent Treatment. Water Proof PVC base. YKK Zippers. Nifco Buckles. 5 Compartments. Large Main Compartment with book and laptop drop pocket. Exterior Easy access Zip Pocket. Toss Handle. Water Bottle Mesh Pocket. Exterior Fold over Phone pocket. Breathable Back Padding. Adjustable Straps Care label Spot clean with cold water & mild detergent, Air dry, Do not iron. Materials Exterior: 100% recycled Nylon, with PVC bottom shell Interior: 210D polyester , EPE foam inside padding, 100% polyester mesh Accessories: 100% Polyester straps, YKK zippers, NIFCO buckles