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Outdoor Research Alpine Onset Merino Ubertube Top

Outdoor Research Alpine Onset Merino Ubertube Top
  • Color: Loden
  • 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 : #283500

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


WEIGHT : 8.9 oz/252 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
Loden / Small 727602295435 2835001943006 MEN32689806N
Loden / Medium 727602295442 2835001943007 MEN32498788N
Loden / Large
Loden / X-Large
Loden / XX-Large
Black / Small 727602295299 2835000001006 MEN32621092K
Black / Medium
Black / Large
Black / X-Large 727602295329 2835000001009 MEN33926433K
Black / XX-Large
Heather Charcoal / Small
Heather Charcoal / Medium
Heather Charcoal / Large
Heather Charcoal / X-Large
Heather Charcoal / XX-Large