The adjustable shoulder strap makes the bag feel like a satchel if you need to carry it around town after locking up your bike. For increased visibility, there are reflective details and light loops on both sides of the Altura Heritage 40 Litre Panniers - Pair.12oz water-resistant waxed canvasRixen Kaul Vario pannier fittings20 litre capacity per pannierLid closure with Woojin two tone buckleInternal draw cord closureLarge zippered lid pocket with key clip and internal pocketSupplied with adjustable shoulder strapReflective detailingLight loops at each sideMain Fabric: 97% Cotton, 3% PolyesterSecondary Fabric: Lining: 100% Polyester