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Intraknit All-Season Merino Base Layer Bottom -Women's
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Lightweight merino base layer bottoms with seamless Intraknit ventilation and dynamic stretch
What Our Gearhead® Experts Are Saying:
"These Intraknit bottoms feel like they were made just for me—the fit hugs without squeezing, and they move effortlessly whether I’m skiing or trail running. The ventilation zones keep me dry even during big climbs, and the merino blend means I stay warm when I slow down. They’re my go-to base for all-day comfort and performance."
Designed for high-output days in cold conditions, the Smartwool Intraknit All-Season Merino Base Layer Bottom delivers seamless performance that keeps up with every move. Crafted with Smartwool’s Intraknit™ technology, these bottoms integrate insulation, articulation, and ventilation directly into the 3D knit construction for an adaptive, body-contoured fit.
The Merino Sport yarn blend combines the temperature regulation and odor resistance of merino with the durability and fast-drying power of polyester. Mesh ventilation zones boost breathability to keep us dry and comfortable during long climbs or intense workouts. Finished with a mid-rise waistband and a slim, flexible fit, these bottoms are built to move like a second skin—no bulk, no restrictions, just pure performance.
Details
- High-performance base layer bottoms for cold-weather training or skiing
- Intraknit™ technology integrates insulation and ventilation seamlessly
- Merino Sport blend manages moisture and resists odor
- 3D body mapping enhances flexibility and natural movement
- Mesh ventilation zones increase airflow in high-sweat areas
- Slim, mid-rise fit layers comfortably under shells or outerwear
- Quick-drying and lightweight for all-season versatility
- Ideal for running, skiing, hiking, and winter training
- Item #SWLZ9FU
- Material
- 52% merino wool, 45% polyester, 2% elastane, 1% polyamide
- Fit
- fitted
- Length
- full-length
- Inseam
- 31in
- Thermal
- yes
- Anti-Odor
- natural attribute of merino wool
- Activity
- running, training, skiing, snowboarding
- Manufacturer Warranty
- limited 2 years

Go Far. Feel Good.
Smartwool makes comfortable, capable Merino wool socks and apparel to add comfort and confident to any adventure.