Smartwool on Instagram: "Winter is all about layering, friends! When I was moving to Alaska and prepping for my first winter with -40 temps, I bought a pair of thermal baselayers from Smartwool and STILL wear them! So, their durability and effectiveness really do speak for themselves! @smartwool merino wool base layers come in a variety of thicknesses and warmth so you can tailor your layering system for your activity and weather. #ad What layering questions do you have?! Happy winter!!"