Icebreaker Bodyfit 200 Legging - Boys' - $39.95

Before you take junior out into the cold for some quality one-on-one time, make sure hes geared up with warm baselayer bottoms like the BodyFit200 Leggings from Icebreaker. He might not yet know exactly what merino wool is or be able to articulate exactly how its non-itchy natural fibers regulate his body temperature, but hell remember the great time he had and want to come back out with you next weekend, which, after all, was the whole point. - $39.95