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Outdoor Research Alpine Onset Merino Bottoms

Outdoor Research Alpine Onset Merino Bottoms
  • Color: Black
  • Color: Charcoal Heather
Color: Black
Size: Select size
Please select options Unavailable


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 : #283225

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

WEIGHT : 5.9 oz/166 g


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

Flat Seam Construction
1 %/&" 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
Black / X-Small
Black / Small
Black / Medium 727602236421 2832250001007 WOM30115997K
Black / Large 727602236438 2832250001008 WOM30949435K
Black / X-Large
Black / XX-Large
Charcoal Heather / X-Small 727602352244 2832250893005 WOM41551147R
Charcoal Heather / Small 727602352251 2832250893006 WOM40704621R
Charcoal Heather / Medium 727602352381 2832250893007 WOM40864126R
Charcoal Heather / Large 727602352398 2832250893008 WOM4047173R
Charcoal Heather / X-Large 727602352404 2832250893009 WOM41448719R
Charcoal Heather / XX-Large