The Boys' 2pc Thermal Set - All in Motion? Navy Blue is made with cozy fabric for all day comfort. With the softest touch and easy stretch these fun pieces will not only keep him warm but is also great for everyday wear. Keeping him cozy on chilly days for playing in the snow or cuddled up on the couch, these thermals are a must-have! Made for every move, priced for every day. Size: XL. Color: blue/navy. Gender: male. Age Group: kids.