Port Authority® - Urban Backpack. BG77 Fabric/Style: 100% poly ripstop is light and strong. Contrasting 600 denier poly adds reinforcement. Padded computer case is perfect for travel. MP3-player pocket with hole for earphones. Waist and chest straps for hiking. Dimensions: 17 w x 19 h x 8.25 d, cubic inches: 2,665.