The Patagonia Storm Shift Pant is a 2-layer GORE-TEX ePE shell built to keep kids dry and windproof through cold, active days outside. Its fabric, membrane, and durable water repellent finish are made without intentionally added PFAS, so the waterproofing holds up without the forever chemicals traditionally used to achieve it. As an unlined shell, it's meant to pair with warm inner layers underneath, giving kids a high-output layering system instead of one fixed insulation level for every kind of cold. What Our Gearhead(R) Experts Are Saying:"My kid has fallen in these more times than I can count and the scuff guards and internal gaiters still look brand new. The Grow Fit extra length meant we got a second season out of them without buying up a size."