When the first cold front of the fall settles into place, we keep our workout routine consistent by slipping on the Under Armour Coldgear Armour Fitted Mock Top, lacing up our shoes, and hitting the road. The midweight baselayer is designed to move with us, allowing for a full range of motion while we're taking deep breaths of cool, crisp air. The stretch-mesh back and underarm panels offer ventilation where we need it most, while the brushed interior material and dual-layer fabric wick away moisture to keep us warm and comfortable as we work up a sweat.