Interlock Kids Thermal TopDesigned to fit fairly snug, Simply Merino thermal tops are incredibly versatile. Wear it with jeans, under a jumper or as a thin layer under all of your kid's favourite activity gear. The natural fabric breathes, helping control body temperature, and wicks moisture away from the skin, keeping bodies dry and warm. Note: no thumbholes on these sizes. Looking for larger kid sizes? Check out Big Kids Thermal Top for a larger option with thumbholes. For