Lightweight Next-to-Skin Performance
Build your day on a solid foundation with the K1 - Primus Pullover baselayer. Wool balanced with synthetic fibers delivers long-lasting durability, easy wash cycles, and the fast moisture transport your layering system needs. Flat seams ensure bulk-free layering, and thumbhole cuffs combine with a ½-zip front to offer adjustable warmth.
Beyond Wool
Our wool combines with synthetic fibers to create the ideal performance fusion for moisture management: wicking up and lifting out sweat, protecting against odors and wash shrinkage, increasing durability, and ensuring next-to-skin comfort. Your system’s moisture transport starts here.
Fuss-Free Foundation
Flat-seam construction ensures all-day comfort, delivering a smooth next-to-skin feel and reducing bulk when layering up.
Tunable Toastiness
Thumbhole cuffs extend coverage for warmer hands, and a 1/2 zip front helps shed extra heat in a hurry.
K1 - PRIMUS
USE GUIDE
WHEN TO USE
Below 50° F as a next-to-skin baselayer.
PAIRS GREAT WITH
Active insulation and softshells.
BENEFIT OVER OTHER LAYERS
Highly breathable, fast-drying layer that can have any other layer worn over it.
Learn more about layering:
VIEW SYSTEM BUILDERSPECS
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Layer Level1
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Body Material2.7 oz. piqué 78% polyester/27% wool
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Weight (Size L)8.5 oz.
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Wind ResistantNo
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BreathableYes
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Moisture WickingYes
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Fast DryingYes
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PocketsNone
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CuffThumbhole cuffs
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SourceImported
Trade Agreements Act Compliant
Designed in Seattle. Imported.