You cannot go wrong with this Athletic Works

Boy's Waffle Knit Thermal Set. This thermal

set is extra warm yet breathable thanks to

their cotton/poly blend construction. He'll

keep warm in this base layer as ribbed wrist

and ankle cuffs trap in precious body heat.

Your big boy will feel comfortable and cozy in

this fitted thermal set that features a crew

neckline for a classic look that can also double as PJs.