Regatta Mens Thermal Underwear Short Sleeve Vest/T-Shirt Polycotton, , Lightly brushed for maximum comfort. Short sleeved. Size - Chest to Fit S 37-38, M - 39-40, L - 41-42, XL - 43-44, XXL - 46-48. Fabric: Polycotton. Weight: 220gsm.