90% Airlume Combed Ringspun Cotton, 10% Polyester. Fabric: Heather, Micro-Rib, Pre-Shrunk, Stretch. Design: Plain. Neckline: Crew Neck. Sleeve-Type: Sleeveless. Cropped, Deep Armholes, Side Seams, Tearaway Label. Fit: Muscle. 150gsm. Sustainability: Fair Labor Association, WRAP Certified. 10 UK: 32 in. 12 UK: 34 in. 18 UK: 40 in. Ref: UTRW10340