100% Merino Wool Base Layer Set Women - Thermal Underwear Long Johns PJs — Open-Box, 23% Off

SOFT FROM FIRST WEAR - Size XL. Most base layers need weeks to break in. This lightweight merino wool base layer set doesn't. 165g superfine merino sits next to skin immediately - no scratching, no adjustment period. OEKO-TEX Standard 100 certified. Package includes: a wool thermal baselayer set bonus socks or neck warmer (USD15). TEMPERATURE REGULATION - These merino wool thermal underwear sets for women adapt to body heat during cold hikes, ski days, and active outdoor use - providing warmth without overheating. Lightweight merino balances insulation with breathability. MOISTURE-WICKING & FRESH - Our merino wool underwear women rely on for active use wicks sweat naturally, preventing the clammy feeling synthetics cause. Stays fresh on multi-day outdoor trips without washing. MACHINE WASHABLE MERINO - This odor resistance merino wool thermal tank underwear resists shrinking, fading, and color bleeding after washing. Machine wash at 86°F (30°C) - shape and softness remain consistent wash after wash. No dry cleaning required. FOR LAYERING AND GIFTING - Ideal for hiking, running, skiing, travel, cold commutes. Women's merino wool top tank base layer arrives in a gift-ready paper bag: a practical present for active women and anyone replacing a scratchy base layer.

There is a base layer you put on and forget about. Not because it does nothing, but because it handles everything quietly: the warmth question, the moisture question, the smell question, all managed by a fiber that has been doing this for centuries. The MERINNOVATION odor resistance women's merino set is that layer. The set includes a long-sleeve top and a full-leg bottom, both cut to layer cleanly under outerwear without adding bulk. The slim athletic silhouette lies flat under ski pants, work trousers, or dress layers without visible seams or bunching. 

Worn as a matched system or as separate pieces on milder days, every element of the construction is designed for all-day contact with the skin. Some days begin early and cross several environments. A merino base layer that handles cold morning trails also keeps pace at the gym, looks composed under a professional layer at the office, and arrives at a weekend campsite without drawing attention to itself. The natural fiber carries equal performance through the day's full range, from a still desk start to an active afternoon. 

For the woman who needs her kit to work as hard as she does and disappear into the background while doing it, merino is not a luxury: it is the right material for the job. Light enough to move freely, warm enough to carry through a cold morning, natural enough to handle the whole day without intervention. A considered wardrobe means fewer pieces, chosen deliberately, trusted to outlast the seasons they serve. Merino has a reputation for demanding care. The MERINNOVATION set is built for everyday wardrobe use: practical, reliable, and designed to keep performing season after season. 

The top and bottom work as a matched insulation system or as standalone pieces on days when only one layer is needed. 100% natural merino provides structure and lasting warmth from a single layer, with no synthetic additives required.