The Spyder Toddler Boys' Mini Challenger Jacket keeps him dry and warm while he learns how to play in the snow. Its Xt. L 10k10k laminate provides waterproof breathable protection, and critical seams are taped to keep water out in places most likely to let water in. Spyder treated the Mini Challenger with Spylon DWR for additional water shedding protection, and 3M Thinsulate insulation brings an abundance of warmth in a thin package. Small to Tall lets you extend the sleeves an additional inch and a half for next year's snowy season.