The SKINS S400 Women’s Extra Warm Long Sleeve Top features scientifically proven engineered gradient compression to increase blood flow & oxygen supply, & to re-circulate blood lactate faster. Targeted support stabilises your muscles & minimises vibration which in turn reduces fatigue & risk of injury allowing you to fly down the mountain with ease.SKINS thermal fabric is a blend of Polyamind & Elastane, which combines high pulling & abrasion resistance with excellent breath-ability & a soft feel against your skin. The brushed interior helps to release heat back to your body to give you a thermal advantage in cooler temperatures. Additional details include stretch air flow mesh under the arms for increased ventilation & breathability. Now you have no more excuses. Grab your S400 Extra Warm Top & hit the slopes in style!.