This pure cotton overshirt from M&S is built for casual wear, with a collared neck and long sleeves for easy layering. A button fastening runs the full length, making it quick to get on and off, while two chest pockets add handy storage for school days or weekend adventures. Cut to a regular fit, it sits comfortably without feeling restrictive. The plain design pairs easily with trousers, jeans or shorts, so it earns its place in any wardrobe.