Under armour coldgear mock neck baselayer top junior boys the kids under armour coldgear mock neck baselayer top is perfect for training sessions out on the pitch crafted with a crushed lining that traps warm air against the skin to keep you feeling warm on the colder days this under armour base layer shirt also benefits from a compression fit that helps to increase the power in your muscles while also aiding faster recovery completed with the under armour logo to the neck and back k