1.Materials: High density twill composite Polyester,Tearproof and waterproof. 2.Approx Dimensions:16.7" W x 5.5" D x 11.8" H , it can hold 16'' laptop 3.Multi pockets keep your things organized , One main compartment and 4 inner pockets . Two side pockets ,one Front pockets on the outside 4.Features:adjustable straps,padded back panels relieve the stress of shoulder,versatile attachment loop 5.Multipurpose Backpacks:It is perfect for work,going to school , traveling, hiking, camping, hunting, , cycling and other outdoor activities, etc.