Men’s Merino Wool Baselayer Bottoms | Lightweight Thermal

Why our Vert Junkies® love this

Pure merino. Zero nonsense. The Coreline AR Baselayer Bottom is built for next-to-skin performance when temps swing and output stays high. Thin knit. Fast dry. Odor doesn’t stand a chance.

This is your first layer. It sets the tone for the entire kit.

Key Features

100% merino wool construction—no blends, no fillers
Lightweight knit for high breathability and four-season range
Natural odor resistance for multi-day use
Moisture-wicking fibers move sweat fast
Quick-drying for stop-start output
Next-to-skin athletic fit for clean layering
Flat, low-bulk seams reduce friction under shells and pants

Recommended Use

Pull these on for cold mornings, long days, and variable output—ski laps, cold hikes, camp setup, or work outside when weather doesn’t quit. Built to run solo or stack under softshells and hardshells without bunching.

They shine when you’re moving, sweating, stopping, then moving again.

Bottom Line

Lightweight merino that works as hard as you do—day after day.

Men's Bottoms — Standard Size Chart (XS–4XL)

Measurements reflect body measures, not garment dimensions. Inseam shown is a regular length (32 in / 81 cm). Tall/short variations may be available on select styles.

Size	Waist (in)	Waist (cm)	Hip (in)	Hip (cm)	Inseam (in)	Inseam (cm)
XS	26–28	66–71	32–34	81–86	32	81
S	29–31	74–79	35–37	89–94	32	81
M	32–34	81–86	38–40	97–102	32	81
L	35–37	89–94	41–43	104–109	32	81
XL	38–40	97–102	44–46	112–117	32	81
2XL	41–43	104–109	47–49	119–124	32	81
3XL	44–47	112–119	50–53	127–135	32	81
4XL	48–51	122–130	54–57	137–145	32	81

Inseam is measured crotch to ankle. For tall (34 in / 86 cm) or short (30 in / 76 cm) lengths, adjust accordingly. 1 inch = 2.54 cm.

BUILT TO BREAK LIMITS

GEAR THAT NEVER QUITS

You don’t need comfort. You need gear that holds when everything else gives out. Whether you're skinning up a frozen ridge, clinging to vertical ice, or bombing down scree at breakneck speed, Alpine Extreme delivers precision-built gear that answers only to obsession. No gimmicks. No shortcuts. Just ruthless quality that thrives where others fail.

You push harder. We keep up.

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Coreline AR Baselayer Bottom Merino - Men's

Color: Gray

Size: M

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Coreline AR Baselayer Bottom Merino - Men's