The Katabatic Merino Wool Base Layer Bottoms are designed to be your go-to cold-weather essential, offering lightweight warmth, next-to-skin softness, and all-day comfort. These base layer bottoms fit smoothly under ski pants, bushwhacking leggings, or Nordic ski tights, keeping you warm without bulk. Thoughtful details like a wide, comfortable waistband, hidden back pocket, and seam placement for reduced chafing make them a must-have for winter adventures.

• Odor-resistant Merino wool for multi-day wear

• Wide, comfy waistband and form-fitting design for bunch-free layering

• Hidden interior back pocket fits a smartphone

• Inner thigh seams placed forward of center to reduce chafing

• Cuffed hems and crotch gusset for ultimate fit and comfort

• Two fit options for different body proportions

• Perfect for skiing, winter biking, hiking, and layering under snow pants

• Made in the USA of imported fabric

Fabric

Made from ultra-soft 18.5-micron Merino wool, this 150gsm fabric provides lightweight yet effective warmth. Certified to the Responsible Wool Standard, this Merino wool ensures ethical sourcing and responsible land management, supporting biodiversity and humane animal welfare practices.

• 87% Responsible Wool Standard Merino Wool

• 13% Recycled Nylon

Merino wool is a natural performance powerhouse, offering breathability, moisture management, and odor resistance. To enhance durability without compromising softness, we’ve blended in 13% recycled nylon, making these leggings stronger while maintaining the luxurious feel and no-compromise-performance of Merino wool.

Fit

The Katabatic Base Layer Bottoms offer a form-fitting, legging-like silhouette with a higher-rise waistband that sits at the belly button for most wearers.

Choose from two fit options:

• Wild Iris Fit – Ideal for those with a straighter body shape through the upper and lower hip.

• Azalea Fit – Designed for curvier figures, with a narrower waist and more room in the hips.

Need help deciding? We recommend starting with the Azalea Fit in bottoms, based on customer favorites.

Specs

• Weight: 5 oz (Size M)

• Made in the USA of imported fabric

Suggested pairing

Pair it with our Merino Wool Isostatic T-Neck Top for head-to-toe warmth and comfort. Whether you’re hitting the slopes or layering up for a winter trek, these base layer bottoms have you covered!

This product is: Sourced

Rooted in American ingenuity, crafted with care. These products combine domestic expertise with select global materials for quality you can rely on.