The Vixen Pant puts 60g of insulation between her and cold chairlifts, and offers reliable 10K wateproofing to keep moisture out. The waist is easily adjustable so she can get the right fit, and the cuffs are actually extendable by 2". If your child is particularly tall for her age you can order to fit her waist and let out the cuffs. If your child is average height you can let the cuffs out when she grows and squeeze in an extra season of wear.