Custom Shell™ HD: The Custom Shell™ HD process lets bootfitters personalize to the boot’s lower shell or cuff in 10 minutes while thin wall construction and new materials keep the foot closer to it

Secondary Fabric: 95% recycled polyester 5% estane

Supercharge your run with these pacy road runners

And a knitted DWR helps protect you from the elements

Rubber nose and temple pads

Smartwool men's Classic Thermal Crew Colorblock Size:S Custom Shell™ HD: The CustomOur Men's Classic Thermal Merino Base Layer Colorblock Crew features 100% Merino wool made with a flatlock seam construction and offset shoulder and side seams designed for enhanced comfort, breathability , thermoregulation, and odor resistance. From hiking to running and skiing, this base layer brings consistent comfort, plus reliable warmth and durability, for every winter activity. Features: Slim Charcoal Honey Gold is a collaboration between Arbor