“Finally, warm winter pants that don’t make me look like the Michelin Man on my way to work.”
FLEECE-LINED PANTS
Soft fleece inside. A clean, everyday silhouette outside.
Free US shipping
Try them for 30 days. Not right for you? Get your money back.
The fleece lining helps hold a layer of warm air close to your body. The warmth is built into the inside of the pants, so you get a soft lining against your legs with an everyday fabric finish on the outside.
Made for cold morning walks, errands and the commute. How much extra layering you need will depend on the weather and how you feel the cold.
They have a straight-leg silhouette, with the fleece on the inside rather than a quilted, puffy outer. Wear them with the boots or sneakers you already reach for.
Zipped side pockets keep your small essentials close on walks and errands.
Measure your waist and hips, then compare with the chart below. Measurements are in inches.
| Size | US Size | Waist (in) | Hip (in) | Inseam (in) |
|---|---|---|---|---|
| XS | 0 - 2 | 24 - 26" | 34 - 36" | 29.5" |
| S | 4 - 6 | 26 - 28" | 36 - 38" | 30.0" |
| M | 8 - 10 | 28 - 30" | 38 - 40" | 30.5" |
| L | 12 - 14 | 31 - 33" | 41 - 43" | 31.0" |
| XL | 16 - 18 | 34 - 37" | 44 - 47" | 31.5" |
| 2XL | 20 - 22 | 38 - 41" | 48 - 51" | 31.5" |
Yes. With the 2 Pairs offer, you get one paid pair and one free pair. Pick the color and size for each separately, whether both are for you or one is a gift.
The button adds both selected pairs to your cart, and the BOGO discount applies automatically. No code needed.
Yes. You have 30 days after delivery to try them in your own winter routine. If they aren't right for you, contact us within that window to arrange a return and refund, even if you've worn them.
Your BOGO order is covered too. You don't have to judge the fit and feel from a photo.
Free shipping on all US orders.
For return conditions and instructions, read our return policy.
With the layers you already reach for.
A coat. Your everyday boots.
Ready for the trip across town.
Keep it casual with sneakers.
A simple knit. A slower pace.
Plush fleece lining.
Woven outer fabric.
Real wearers on why MountainWarmth replaced their bulky winter base layers.
“Finally, warm winter pants that don’t make me look like the Michelin Man on my way to work.”
“Usually my legs go numb in 10 mins outside. Walked 45 mins in a blizzard, didn’t feel a thing.”
“My biggest fear was sweating once inside heated shops. The fleece breathes—wore them 9 hours straight.”
Honest answers to help you choose the right pair for your winter.
No. Unlike non-breathable ski pants or heavy nylon windbreakers, MountainWarmth pants use a micro-porous thermal fleece lining that insulates without trapping moisture. It retains your natural body heat outdoors, but breathes freely the moment you walk into a heated cafe, office, or car. You stay comfortably warm, never clammy.
They feature a tailored straight-leg cut with 4-way stretch fabric and a comfort-stretch waistband with an internal drawstring. If you have athletic thighs or fall between two sizes, we recommend sizing up for a relaxed fit, or staying true to size for a sleek, tailored look. If you need a different size, our US exchanges are completely free.
Zero swish. The exterior is crafted from a soft, matte-finish technical stretch twill—not crinkly nylon or loud waterproof shell fabric. From the outside, they look and drape like premium everyday trousers or tailored chinos, making them completely quiet and appropriate for work and casual wear.
The exterior is treated with a durable water-repellent (DWR) finish and woven tightly to create a physical barrier against sub-zero wind chills. Light rain, snow flurry, and slush bead right off instead of soaking through, while the thermal fleece interior traps radiant warmth down to 14°F (-10°C).
Machine wash cold on a gentle cycle with like colors, then line dry or tumble dry on low. Our thermal microfleece is anti-pill treated and pre-shrunk, meaning the interior remains plush, ultra-soft, and true-to-fit even after dozens of washes. No special dry cleaning required.
Every pair comes with our 30-Day Cold Weather Wear Test. Take them outside on your coldest morning walk or commute. If you're not 100% satisfied with the warmth, fit, or comfort, simply reach out to our team for a fast exchange or a complete, hassle-free refund. We provide a pre-paid US return label.