The 686 Dojo(R) Shell Pant grows the way a kid actually grows: in the legs. The Youth Evolution(TM) sizing system extends the leg length as your kid gets taller, so a growth spurt mid-season doesn't mean a whole new pair of pants. As a true shell with no insulation built in, it leaves the warmth layer up to us, so a mild spring day and a deep winter storm both call for the same pant underneath a different base layer. A 2-layer infiDRY(R) 10K fabric with critically taped seams keeps snow and wet out, and a boot gaiter seals the ankle against spray during a deep lap. What Our Gearhead(R) Experts Are Saying:"I extended the legs an inch in February after a growth spurt and got the rest of the season out of a pant I thought we'd have to replace. On warmer days we skip the heavy base layer underneath and it still keeps the wind and wet out just the same."