Burton Cyclops Pant
Here's what other sites are saying:
Don't hesitate to feed your little grom his vegetables. After all, veggies fuel all that rapid growth. When it's time to hit the slopes, Burton has your fast growing little guy in mind with the Room-To-Grow system incorporated into the Cyclops Insulated Boys' Pant. Instead of outgrowing yet another perfectly good pair of snow pants, simply roll up the pant leg to find extra material stitched to the inside pant leg. Pull the stitching apart and voila--an additional 2 inches of pant material unravels. As for functionality, Burton uses a waterproof and breathable DryRide Durashell membrane, which will prevent moisture intrusion for hours of fun in the snow. For chilly days and early mornings at the bus stop, the Cyclops Insulated Boys' Pant has Thermacore insulation throughout for mid-level warmth.