Color/material: navy polyester. Design details: Rolltop Rucksack is a city staple, perfect for commutes on bike or foot. The look is characterized by a tactile strap, signature carabiner and rolltop opening. The waterproof bag also features a side-access laptop pocket, front zip pocket and padded back panel. Cycle-ready features include a front D-ring ideal for holding bike locks and a buckle fastened chest strap for a secure ride-proof fit.. Measures 12.5in wide x 18.8in high x 4.3in deep. Buckle closure. Imported. Please note: All measurements were taken by hand and are approximate; slight variations may occur.