WHAT IT IS / PRODUCT FEATURESLightweight merino wool base layer with short sleeves to wear under a Gabba or jersey for cool rides. Material 125 g/m2 with 48% merino / 47% recycled polyester / 5% elastane provides the warmth of wool with the durability and sweat wicking of polyester.Machine washable.Low collar.Color: 010 blackSizes: XS - 2XLWeight: 113g. (M)Temperature range: 8 - 14 ˚C Material composition:48% wool 47%polyamide 5%elastane For high intensity rides or races in cold conditions, use it under a Gabba jacket or jersey/vest for extra torso warmth, even if it gets wet. The sleeves are long enough to team with arm warmers.