Is it a shirt? Is it a jacket? No, it's a shacket, the superhero of mid-season steeziness. Perfect for those grey days where a full-on coat seems like overkill, the shacket (aka the overskirt) is an essential piece of transitional kit. Wear it with a plain T-shirt and jeans for an simple but stylish everyday look, or dressed up with a pair of boss boots and trousers for some serious smart/casual vibes. Shop our top 10 shackets below.