Boys under armour jacket size medium

100% waterproof & breathable with fully taped seams UA UGrow system allows sleeves to grow 2" to last an extra season UA Storm technology repels water without sacrificing breathability Built to feel warm, dry and light Windproof materials & construction shield you from the elements 3M™ Thinsulate™ insulation is thin yet protective, trusted warmth & up to two times warmer than down