Look; your ski boots are sick and tired of your full-length baselayers getting all up in their zone when they're trying to perform (If you don't ski, name your piece of adventure footwear). If you want to get rid of that bulk with some 3/4 length action, you won't be disappointed in this option from Smartwool. 100% responsibly sourced Merino wool provides ultimate breathability and comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric.