A basic essential and a practical necessity, zipped sweats are closet staples and a sleek alternative to cardigans and sweaters, when you need an easy-to-wear layer. Whether it's simple layering or a high fashion version of a functional item, you'll find the style that is right for you with this selection of zipped sweats. Designers such as Ralph Lauren and Tommy Hilfiger offer classic designs that blend a sportswear vibe with an elegant appeal, Martin Margiela and Helmut Lang bring avant-garde styles and cutting-edge designs, or try high street options such as Gap for basic staples.