How to Choose Base Layers
Outdoor Research Alpine Onset Merino 150 Base Layer Bottoms - Men's
$99.00
Members get an est. $9.90 in rewards
Layer up for active outdoor adventures with these lightweight Outdoor Research base layer bottoms. They're made with a light, breathable merino wool blend. And they provide UPF 30 protection.
- Made with a non-mulesed merino wool blend that's lightweight, breathable, wicking and quick-drying
- Lightweight fabric (150 g/m2)
- These bottoms stretch and move with the body for unrestricted movement and a natural range of motion
- Flatseam construction delivers chafe-free performance
- Elastic logo waistband provides low-profile comfort that perfectly layers under a shell and mid layers
- UPF 30 rating shields from the sun's UV rays
- Fabric is naturally resistant to odors
- 9 in. leg opening on size Medium
- Gusseted crotch
- Shaped functional fly
Imported.
View all Outdoor Research Men's Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | 53% merino wool/42% polyester/5% LYCRA spandex |
| Sun-Protective Fabric | Yes |
| UPF Rating | 30 |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Fly Opening | Yes |
| Underwear Weight | Lightweight |
| Inseam (in.) | 31 inches |
| Gender | Men's |
Outdoor Research Clothing - Men's
| XS | S | M | L | XL | XXL | XXXL | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 38 | 40 | 42 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chest | 33.5 - 36 | 36 - 38.5 | 38.5 - 41.5 | 41.5 - 44.5 | 44.5 - 48 | 48 - 52 | 52 - 56 | |||||||||||
| Sleeve Length | 31.5 | 32.5 | 33.5 | 34.5 | 35.5 | 36 | 36.5 | |||||||||||
| Waist | 26.5 - 29 | 29 - 31.5 | 31.5 - 34.5 | 34.5 - 37.5 | 37.5 - 41.5 | 41.5 - 45.5 | 45.5 - 50 | 29.5 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 39 | 41 | 43 |
| Hip | 32.5 - 35 | 35 - 37.5 | 37.5 - 40.5 | 40.5 - 43.5 | 43.5 - 46 | 46 - 49.5 | 49.5 - 53 | 35.5 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44.5 | 46 | 47.5 |
| Inseam | 31.5 | 31.5 | 32 | 32.5 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated.
Buying Advice
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Travis B
Warm moisture wicking layer
1 month ago
For how thin it is, this offers a nice first layer to regulate moisture wicking when layering clothes. I’ve used them for snowboarding and hiking in colder climates and found they work great and are very comfortable. It’s not the softest material but I personally don’t mind the texture.
Originally posted on ExpertVoice.com
Pete
BC Canada
Good upgrade from previous generation base layers
9 months ago
Really like the improvement to this base layer with the addition of the merino blend. It feels better next to skin and I think it actually moves moisture and dries faster with the merino compared to the other OR base layers I have.
Originally posted on outdoorresearch.com
Joseph L
2 months ago
Lightweight yet warm, and avoids picking up odors after being worn a couple days in a row. I picked this up for a 6 day backcountry trip and it served me well in 40-50 degree weather.
Originally posted on ExpertVoice.com
Daniel C
Base layers
4 months ago
Works well under uniforms. Wasn’t too thick to hinder the fit.
Originally posted on ExpertVoice.com
Charleston
Minnesota
Disolvable
7 months ago
Turns to powder when wet. It is unwashable, even by hand.
Originally posted on outdoorresearch.com
Anonymous
8 months ago
Originally posted on outdoorresearch.com
Cory S
4 months ago
Originally posted on ExpertVoice.com
Anonymous
8 months ago
Originally posted on outdoorresearch.com
Anonymous
8 months ago
Originally posted on outdoorresearch.com