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Alpine Onset Merino 150 1/4 Zip: A light layer for backcountry comfort. Flat seams and a next-to-skin fit are great when layering up, and the merino blend fabric regulates temperatures to keep you warm without overheating.Merino and recycled polyester with a hint of stretch for easy movementRepreve recycled polyester is made from plastic bottlesMerino wool is naturally antimicrobial to resist odoursQuarter-length zipper provides ventilation and coverage optionsThumb loops keep sleeves in place while you move
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Smartwool Intraknit Thermal Merino Base Layer Crew - Men's
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Outdoor Research / Men's Helium Down Hoodie
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The 5 Best Base Layers of 2024
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MEC T1 Merino Base Layer Short Sleeve Top - Women's
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Outdoor Research Men Alpine Onset Merino 150 T-Shirt(Classic Blue) - Outdoor Research
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MEC T3 Warmest Base Layer Long Sleeve Top - Women's
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Outdoor Research Astroman Sun Hoodie - Men's
![](https://www.backcountry.com/images/items/1200/ODR/ODRZ8JT/CLABLU.jpg)
Outdoor Research Alpine Onset Crew - Men's - Clothing
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Outdoor Research Alpine Onset Merino 150 1/4 Zip - Men's
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Men's Base Layers
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Outdoor Research Women's Alpine Onset Merino 150 Crew