Merino Wool Leggings & Bottoms for Women
Organic wool leggings, long underwear, and layering bottoms for women — from thin merino and wool-silk base layers by Engel to knit wool pieces by Reiff. GOTS and IVN BEST certified, designed for layering under clothing, year-round wear, and temperature-regulated sleep.
About our wool
Two European brands for women's wool bottoms
Our women's wool bottoms collection is built primarily around Engel — specialists in thin merino and wool-silk base layers and long underwear — with Reiff knit wool pieces as a warmer secondary option. Both are German family-run manufacturers using certified organic wool processed without harsh chemicals.
Engel
German family business since 1927. Our primary source for women's merino and wool-silk leggings, long underwear, and thermal bottoms — thin, flexible, and designed for layering under any outfit. IVN BEST certified — the strictest organic textile standard available.
Reiff
Family-run knitting company in southwestern Germany. Source for warmer knit wool leggings and layering bottoms — mid-weight pieces with more structure than thin merino base layers. Made in-house using certified organic yarns.
What to know
Buying tips for women's wool bottoms
Starting wardrobe: 1-2 thin leggings, 1 knit option
Most women find 1 to 2 thin merino or wool-silk leggings from Engel for year-round layering, plus 1 warmer knit wool legging from Reiff for cold days, covers their needs. Because wool needs washing only every 5 to 10 wears — far less often than cotton — a small wardrobe stretches further than you might expect. For colder climates or outdoor use, you may want a second thin pair for rotation.
Layering combinations for different conditions
Thin merino leggings layer smoothly under jeans, pants, leggings, skirts, dresses, and pajama pants — adding warmth without bulk. For very cold days, double up: a thin merino legging under a warmer knit wool legging, or under heavy winter pants. Wool leggings also work as standalone loungewear, pajama bottoms, or travel pieces. For sleep, thin wool-silk bottoms are the softest option; many women find them helpful for maintaining stable temperature through the night, particularly during menopause or in cool bedrooms.
Learn more
Guides for women new to wool
Wool vs synthetic base layers
Honest comparison including microplastic shedding, warmth-to-weight, and durability.
Read the guide →Merino wool weights explained
Interlock, wool-silk, and knit wool — how each construction differs and when to choose each.
Read the guide →How to wash wool clothing
Hand-washing, air drying, and keeping wool leggings looking new for years.
Read the guide →FAQ
Common questions about women's wool bottoms
Can I wear wool leggings as pajama bottoms?
Yes — thin merino and wool-silk leggings are a popular sleep choice. Wool's natural temperature regulation helps maintain a stable body temperature through the night, and wool moves moisture away from the skin rather than trapping it. Many women find wool leggings helpful for managing hot flashes and night sweats, and for sleeping comfortably in cool bedrooms without needing extra blankets. Wool-silk blends are particularly soft for next-to-skin sleepwear.
Will wool leggings fit under my regular pants or jeans?
Yes. Thin merino and wool-silk leggings are designed to layer under regular pants, jeans, trousers, and leggings without adding bulk. The fabric is thin enough to disappear under most clothing while still providing meaningful warmth. For the slimmest fit under tight jeans or tailored pants, choose Engel's thinnest merino (around 170-200 gsm). For warmer days or looser outerwear, a mid-weight knit wool legging from Reiff provides more warmth at the cost of slightly more bulk.
How do I find my size in women's wool bottoms?
Engel uses paired European sizing with XS/S/M/L labels: EU 34/36 (XS/S), EU 38/40 (S/M), EU 42/44 (M/L), EU 46/48 (L/XL). Reiff uses XS, S, L, and XL (no medium size). Each product page's size chart shows specific waist, hip, and inseam measurements. Measuring yourself and comparing to the chart is more reliable than going by size labels alone. Wool leggings have natural stretch — if between sizes, size up for comfort rather than down, especially for sleep and layering use.
What's the difference between merino and wool-silk leggings?
Pure merino leggings are soft, breathable, and durable — the standard choice for everyday wear and layering. Wool-silk blends (typically 70% merino, 30% silk) are even softer and smoother against skin, with added temperature regulation from the silk fiber. Wool-silk is popular for sensitive skin, sleep use, menopause-related night sweats, and as an extra-soft layer against skin. Pure merino is typically fine for most wearers and is more affordable. More on wool fabric types →
Will wool leggings be itchy against skin?
Quality merino wool leggings are not itchy for most people. Merino fibers are typically 17-20 microns in diameter, compared to 30+ microns for the coarse wool that causes the itchy reputation. Engel's IVN BEST certified wool is processed without harsh chemical finishes that can irritate skin. For very sensitive skin, wool-silk blends are even softer and are commonly chosen for next-to-skin layering and sleep use. More on wool and itchiness →
How often should I wash wool leggings?
Less often than cotton — typically every 5 to 10 wears. Wool is naturally odor-resistant, so airing the garment out between wears handles most situations. Spot-clean small marks, and wash when visibly soiled or when the garment needs freshening. Hand-wash in cool water with a wool-safe (enzyme-free) detergent and lay flat to dry. Avoid heat, standard detergents, and fabric softeners. See our complete wool care guide →
Can I return wool leggings if they don't fit?
Yes. Wool leggings can be returned within our standard return window as long as items are unworn, unwashed, and in original condition with tags attached. For best fit, we recommend measuring yourself and checking each brand's size chart on the individual product page before ordering. See our returns page for full details →