Womens Classic Thermal Merino Base Layer 1/4 Zip

Womens Classic Thermal Merino Base Layer 1/4 Zip - View 3

$60 ~~$120~~ In stock

We've updated the fit of our Women's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and one of our best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more.

Features

Slim Fit
100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance
Fit updated to improve functionality while enhancing aesthetics for a range of body shapes
Back body seam wraps to front for body-enhancing fit
Crew neck with raglan sleeves

Flatlock seam construction designed to minimize chafing
8" (20 cm) center front zip with semi-locking slider
Knit in China: 100% Merino Wool
Garment Weight: 236 g = 8.32 oz

Customer Reviews (5.0 / 5 · 5 reviews)

Eli I. ★★★★★ Sep 4, 2026

This is my third season with this one and it still holds its shape after countless washes, which says a lot for a merino top. The updated fit feels more tailored without being tight, and that heavier weight makes it my go-to for cold morning hikes.

Owen ★★★★★ Sep 3, 2026

The 1/4 zip makes layering under a jacket so much easier—no more bunching at the collar when I pull it on over a sports bra. The updated fit hugs my waist without feeling tight across the shoulders, and the merino kept me warm on a chilly morning hike without any itch.

Olivia ★★★★★ Sep 2, 2026

The heavier knit on this top is perfect for frigid morning runs—the 1/4 zip lets me dump heat fast once I warm up, and the merino still feels soft against my skin after a full wash cycle.