Body is made of burly recycled polyester twill to withstand global travel Large zippered main opening allows quick access to organization pockets and laptop sleeve; holds most 15" laptops Soft herringbone webbing straps let you carry this tote over your shoulder or by hand Zippered external pockets allow quick access to necessities Rear sleeve attaches bag to roller luggage handles Body: 8.4-oz 450-denier 100% recycled polyester PET twill with a DWR (durable water repellent) finish. Lining: 200-denier 100% polyester 20.5 ounces