Octave Mens Thermal Underwear All In One Union Suit/Thermal Body Suit British designed full body Union Suit. Made from soft fully brushed thermal fabric for extra warmth. Ribbed fabric for added stretch and comfort. Cosy & warm but lightweight thermal material. Featuring two-way front zip for added convenience. Side seam-free for extra comfort. Easy care home machine wash at 40C. Maintains warmth even after many washes. Body contouring guaranteed perfect fit. Excellent wicking rate draws sweat away from your skin.