Smartwool Intraknit Thermal Merino Base Layer Crew – Men's Color:Charcoal Black 8mm heel-to-toe drop and 38

8mm heel-to-toe drop and 38

Two zippered handwarmer pockets are harness- and pack-compatible

while the ribbed knit adds just enough structure to keep it looking put-together

Collapsible heel folds flat for easy packing — doubles as a solid travel shoe

Smartwool Intraknit Thermal Merino Base Layer Crew – Men's Color:Charcoal Black 8mm heel-to-toe drop and 38When temperatures drop and output stays high, this is the base layer we reach for first. Intraknit construction places denser merino where you need warmth and open mesh where you need airflow no guesswork, no compromises. It layers flat, resists odor through multi day use, and moves without binding. Intraknit technology body maps insulation and ventilation zones into a single knit structure no seams between panels, no bulk Merino wool blend regulates