The 686 Geode Thermagraph(R) Pant puts insulation only where the body actually meets cold surfaces. Insulated panels sit at the seat and knees, the places that touch a chairlift or the snow directly, while large shell zones everywhere else stay uninsulated for real heat and moisture management. That body-mapped system pairs with a 2-layer infiDRY(R) 20K fabric rated to 20,000mm of waterproofing, so wind and wet stay outside while Air-Flo(TM) inner leg vents let heat escape the moment a warm spring session calls for it. A BOA(R)-compatible gaiter and the Pant Jacket Connect(TM) system tie the whole outerwear setup together at the boot and waist. What Our Gearhead(R) Experts Are Saying:"I sat on a chairlift in single digits and stayed warm through the knees and seat, then hiked a ridge in April without ever feeling like I was cooking through the shell panels. The Air-Flo vents did the rest of the work once I started sweating on the climb."