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Outdoor Research Alpine Onset Merino Ubertube Top

Outdoor Research Alpine Onset Merino Ubertube Top
  • Color: Black
$59.99 - $99.99
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 :  #283224

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


WEIGHT :  7.8 oz/220 g


Non-Mulesed Wool
Quick Drying
Lightweight (150Gsm)
Naturally Anti-Odor
UPF 32

Flat Seam Construction
Built-In Neck Gaiter with pieced in ActiveTemp™ Mesh
Raglan Sleeves
Thumb Holes

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 727602236148 2832240001005 WOM35872953K
Black / Small 727602236155 2832240001006 WOM34135177K
Black / Medium 727602236162 2832240001007 WOM3482129K
Black / Large 727602236179 2832240001008 WOM34319487K
Black / X-Large 727602236186 2832240001009 WOM35123327K
Charcoal Heather / X-Small
Charcoal Heather / Small
Charcoal Heather / Medium
Charcoal Heather / Large
Charcoal Heather / X-Large