Outer Material: Canvas; Inner Lining: Waterproof Polyester; 1 Main Compartment; Dimensions: 51 cm x 25 cm (Length x Diameter); Volume: 25 Litres; Closure: Metallic Zip; Shoulder Strap: Removable, Adjustable; External Pockets: 2 side zip pockets; Internal Pockets: 1 zip pocket; Cabin Luggage: Yes; Waterproof: Yes Dimensions : 51 cm x 25 cm x 25 cm (L x W x H)