Vivienne Westwood Tasha Phone Calfskin Leather Shoulder Bag — Black. Composition: 100% Calf Leather Bos Taurus. Exterior material: Calfskin Leather. Measurements: 12 × 23 × 3 cm (4.7″ × 9.1″ × 1.2″). Closure: Zip. Carry: Shoulder. Adjustable strap. Detachable strap.