Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks

Perfect fit. Husband is 5'6" 145lbs wearing Small. Soft feel yet light and warm.

I picked up the medium black 250 and it’s been perfect for cold weather riding and chilly workdays. I’m 5'10" and 180 lbs, and while the fit is a bit loose, the length is perfect. After 2 years of regular use, it’s still going strong—just a minor hole at the ankle, easily hidden by socks. Pros: ✅ Great Cold-Weather Warmth (250 Weight) – Warm enough that I haven’t needed to upgrade to 320 ✅ Ideal for Motorcycle Rides & Cold Work Days – Keeps me warm without bulk ✅ Socks Are High Quality – Cozy and well-made ✅ Durable Over Time – Still in good shape after 2 years Cons: ❌ Slightly Loose Fit (Medium on 5'10", 180 lbs) – Not overly baggy, just not snug ❌ Minor Wear – Small hole near ankle, but nothing major Final Thoughts: Whether you’re riding in the cold or braving freezing temps at work, this base layer does the job exceptionally well. Warm, breathable, and built to last—an excellent investment for cold-weather comfort.

The Merino Wool Base Layer Mens Bottom Pants are very warm, soft and comfy. I bought the Heavyweight, 320g bottoms, and I was worried about them being too thick, they're not that thick at all, they are perfect, very, very comfortable and warm. I was golfing with them in 40 degree weather with 12 mph wind and my legs were not cold at all, plus they were not too warm either, actually just right. I didn't where anything but a t-shirt, polo shirt, and light wind proof Foot Joy golf jacket on top, but my chest and arms were not as comfy warm, as my legs were, even though I was wearing thin golf pants over the Merino bottoms. I live in a cold, northern, climate and have bought many, many, different types of "long Johns" and these are by far the best I've ever bought. When it comes to bottom layer long johns, I think they should be snug, but not too tight, I have a 33 inch waist and a 32 inch inseam and their medium size fit me perfect!

I've been wearing this merino wool Base Layer and it's been awesome—especially when that unexpected snowstorm hit. The 100% superfine 17.5-micron merino wool is super soft, never itchy, and doesn’t feel heavy or bulky, even after a full day out. The warmth is impressive, and I love how the wool's moisture-wicking keeps me dry and comfy no matter the conditions. The fit is just right, with no bunching or overheating, which is a big upgrade from regular cotton. The packaging was actually pretty cool, and the included merino hiking socks are a nice extra. My feet was dry by the end of the day. My only hesitation is about the care instructions—it says to hand wash and lay flat, but I’m tempted to try the washer to see how it does. I liked my Smartwool before because you could just toss it in the washer, but that was only 81% wool. Overall, I'm really happy with this one! I bought 2 more.

Essential when working outside in freezing weather. Effective in keeping one warm; comfortable and soft, doesn't feel as scratchy as conventional wool. Accurately sized.

Very nice set, warm, comfortable worth the price!

Yes, these are the warmest and most comfortable long Johns I have ever worn. They are thin and can be worn under pants easily. Merino wool is quality, breathable long Johns that wear great. You hardly even know you are wearing them and will be warm and look great.

There are amazing. Soft, warm sands great fit. I'll be buying more

Matière très agréable, chaude, confortable. C'est une laine très fine et délicate. Je l'utilise surtout comme pyjama, occasionnellement comme sous-vêtement. Se lave sous programme laine délicat à 30°C et petite dose lessive extra-douce (Mir Laine) (j'utilise un filet). Essorage à petite vitesse (600t/min) pendant une dizaine de minutes. Suspendre pendant 30 à 40 minutes et il est prêt à lemploi. Attention : pas de séchage à chaud ! Toujours impeccable après une vingtaine de lavages

Good mid-weight leggings/base layer, I have a number of these type but these are much thicker and warmer, well made and high waist so they stay up

Fijne dunne onderkleding voor gebruik op de motor in de zomermaanden. Ook bij wat kouder weer heerlijk isolerend.

Muy cálido genial para días muy fríos en bicicleta

Questi pantaloni termici sono una calda carezza sulla pelle. Morbidissimi. In lana merino al cento per cento, si possono usare tranquillamente tutto il giorno perché attivano un calore naturale, piacevole e duraturo. Sono anche certificati oeko-tex il che significa che sono senza sostanze cancerogene o pericolose. In omaggio c'è un paio di calzini in lana merino di ottima fattura dello stesso colore del pantalone che completano questo eccellente intimo da uomo. Ne ho già comprati due. Consigliatissimo.