PS By Paul Smith Knitted Polo Shirt in Black. This knitted pullover polo shirt is a classic piece for your wardrobe, offering a regular fit with a unique five button placket. The buttons have a shining pearlised effect, which complements the grey stripes to the collar. The polo is short sleeved with ribbed cuffs and hem for a fitted look. Style with jeans or trousers for a smart casual look.