Muscle-fit T-shirt by ASOS, Crew neck, Slim-cut sleeves, Longline cut, Cut longer than standard length, Close-cut muscle fit, What all those protein shakes and arm days were for, Length: 78cm/31. ASOS menswear shuts down the new season with the latest trends and the coolest products, designed in London and sold across the world. Update your go-to garms with the new shapes and fits from our ASOS design team, from essential tees to on-point outerwear, and jeans from skinny to straight and beyond.