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Outdoor Research Alpine Onset Merino Bottoms

Outdoor Research Alpine Onset Merino Bottoms
  • Color: Loden
  • Color: Loden
  • Color: Black
  • Color: Black
$53.99 - $89.99
Please select options


Back by popular demand, the Alpine Onset Merino Base Layer Collection is made up of a soft merino wool blended with a recycled polyester for added durability and moisture management.

Merino wool base layers are skiers, snowboarders, and winter enthusiasts' favorite material for good reason. That's probably why customers like you demanded a revival of the Alpine Onset Merino Collection of merino wool base layers, but this time, with a twist - by adding a recycled polyester for added durability and moisture management. Fit to be worn next to skin, and built with a no-chafe flat seam construction, the naturally anti-odor properties of the Alpine Onset Collection make them a great choice for multi-day trips, extended backcountry adventures, and activities where layering up without overheating is key to safety and success.

PRODUCT : 283213

FABRIC : 47% Merino Wool, 47% Recycled Polyester (Repreve), 6% Elastane Jersey


WEIGHT : 6.4 oz/181 g


Non-Mulesed Wool
Quick Drying
Lightweight (150Gsm)
Naturally Anti-Odor
UPF 33

Flat Seam Construction
Shaped Functional Fly
1 3/8" Elastic Logo Waistband
Gusseted Crotch


The Infinite Guarantee®

Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product. Get your gear back on track by filing a claim on our Warranty Page

Have a question? Problem? Other request? We’re here to help you find a solution.

Our customer service is waiting for your call at 855-967-8197, on weekdays Monday-Friday between 7am-5pm PST. If you prefer email, you can send your query to

Thanks for getting in touch. We can’t wait to get you back outside with your gear.

Machine wash warm separately, rinse thoroughly. Do not bleach. Do not use fabric softener. Tumble dry medium. Do not iron. Do not dry clean.

Part Numbers

Option UPC MPN Store SKU
Loden / Small 727602225982 2832131943006 MEN28843303N
Loden / Medium 727602225999 2832131943007 MEN28282312N
Loden / Large 727602226002 2832131943008 MEN28956460N
Loden / X-Large 727602226019 2832131943009 MEN29664128N
Loden / XX-Large 727602226026 2832131943010 MEN30832780N
Loden / XXX-Large
Black / Small 727602225869 2832130001006 MEN28484214K
Black / Medium 727602225876 2832130001007 MEN28803389K
Black / Large
Black / X-Large 727602225890 2832130001009 MEN29545546K
Black / XX-Large 727602225906 2832130001010 MEN30364466K
Black / XXX-Large 727602351278 2832130001011 MEN31998030K