Help keep your ski boots, hiking boots, and running shoes free of bulk and friction with Smartwool's Classic Thermal Merino Base Layer 3/4 Bottom. 100% responsibly sourced Merino wool provides ultimate breathability and comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for your layering needs.
Slim fit is intended to follow the contours of the body
100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance
Flatlock seam construction designed to minimize chafing
Fully functional fly
Merino-lined elastic waistband designed for maximum comfort