Lucky Bums Kid's Performance Long Sleeve T-Shirt The ideal lightweight base layer technical long sleeve tee shirt in Realtree APHD Made of 100% polyester this shirt offers superior moisture wicking functionality Wear it as a base layer to combat those chilly mornings or wear it alone in style Sure to be a staple for the treks, the hunt, and for every day wear. Extra small is suitable for ages 4-5 and is size equivalent to a 5T