Designed in Japan
Shop NowGreat mid layer. I wear
"Great mid layer. I wear them hiking, and around town almost every day in winter under my Levi's. Worth the money."
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$120.00
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$120.00
This item's price has been updated recently to ensure you get the best value.
Last priced at -
Our best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Leggings With Fly are the perfect foundation for your cold-weather layering.
Good for:

100% Merino Wool, Exclusive of decoration
Machine wash cold gentle cycle. Wash with like colors. Do not use softeners. Do not bleach. Do not tumble dry. Line dry in shade. Cool iron. Do not iron print. Do not iron decoration. Do not dry clean.
Model measurements
Height: 6'3" / 191cm. Waist: 33.1" / 84cm. He is wearing size Medium.
Key product measurements
Inseam Length: 78.1cm based on size L
Fit
Slim
Overall rating: 4.725714 / 5 from 175 reviews.
The Men's Merino 200 Oasis Thermal Leggings wFly are highly regarded for their excellent quality, perfect fit, and ideal weight for cold-weather layering. Customers praise the soft, comfortable, and odor-resistant fabric, as well as the durability and high-quality construction of the product.
Review topics: ["fit","size","weight","pants","weather","quality","fabric","works","material","wear","feel","base layer","comfort","layer","top","leggings","moisture","stretch","heat","wool","warmth","protection","winter","johns","buy","john","pair","icebreaker","underwear","clothing"].
"Great mid layer. I wear them hiking, and around town almost every day in winter under my Levi's. Worth the money."
— Lorie R. (5/5)
"J'adore la texture de la laine Merino"
— Claude B. (5/5)
"Love them! Really confortable!"
— Ariane C. (5/5)
"They fit and feel perfect!"
— Jeffrey M. (5/5)
"Absolutely amazing leggings I wear these 5 months a year"
— Cole (5/5)
"These base layers bottoms are the best. I use them under Goretex shell pants for all my winter sports. They keep their shape and wash well."
— Sam M. (5/5)
"I bought theses as a base layer for skiing and the mountain temps are often in the single digits with wind. They are a touch light when just standing outside or on the chair but perfect while skiing and moving. I think they will also be good for winter hikes or cold spring/fall days working on the water."
— PeterPrinciple (4/5)
"C'est Legging sont extrêmement confortable, mais un peu fragile si on les accroche"
— Lhomme N. (4/5)
"I have favoured merino wool base layers for many years. In anticipation of extended travels this spring, my family gifted me Merino 200 Oasis Leggings for the holidays. These are my first Icebreaker leggings, and I really like the slightly snugger fit."
— Realwheel (5/5)
"Honestly, my life changed after buying this. It's absolutely comfortable and keeps me warm. Highly recommended!"
— Ce (5/5)
Find the size that fits you best based on people just like you.
Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for chest and waist correspond to two different sizes, order the size indicated by your chest measurement for tops and your hip measurement for pants.
| XS | S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|---|
| Waist | 27.5-29.5 | 29.5-31.5 | 31.5-34 | 34-37 | 37-40 | 40-43.5 | 43.5-46.5 |
| Hip | 34.5-35.5 | 35.5-36.5 | 36.5-39 | 39-41.5 | 41.5-44 | 44-46.5 | 46.5-49 |
| XS | S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|---|
| Waist | 70-75 | 75-80 | 80-86 | 86-94 | 94-102 | 102-110 | 110-118 |
| Hip | 83-88 | 88-93 | 93-99 | 99-105.5 | 105.5-112 | 112-118.5 | 118.5-125 |
*Looking for the inseam length? Please refer to the product page to find out.
Our three different fits - slim, regular, and relaxed - ensure that when worn together, layers move and breathe like a single garment.
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