Primus K1 Pullover

$60.00

Available

Color
Manatee Grey
Black
Size

Fit: Standard

-
Size & Fit Guide
Length

This is a clearance item. All sales are final.

Lightweight Next-to-Skin Performance

Build your day on a solid foundation with the Primus K1 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 BUILDER

SPECS

  • Layer Level
    1
  • Body Material
    2.7 oz. piqué 78% polyester/27% wool
  • Weight (Size L)
    8.5 oz.
  • Wind Resistant
    No
  • Breathable
    Yes
  • Moisture Wicking
    Yes
  • Fast Drying
    Yes
  • Pockets
    None
  • Cuff
    Thumbhole cuffs
  • Source
    Imported

Trade Agreements Act Compliant
Designed in Seattle. Imported.

Customer Reviews

Based on 34 reviews
82%
(28)
18%
(6)
0%
(0)
0%
(0)
0%
(0)
K
K.L.
Very happy

Very Happy with my purchase

C
C.S.
Super impressed overall

Bought the Primus K1 as a lightweight base layer. So far have worn it outdoors in spring conditions in Colorado a few times. Its comfortable, warm for the weight, and the turtle neck 1/4 zip and thumb eyelets are nice additions for when you want need to modify the temp a bit. I’ll be wearing this on some climbs over the next week.

J
J.M.
K1

Love it. Runs a bit small. Will buy more when they come back in stock.

S
S.D.
Super Soft

I love this pullover! It’s super soft and all the quality that Beyond is known for.

J
J.S.
Primus K1 Pullover - Great Baselayer!

Another great product from an outstanding American company.

Need Help? Contact us with any size or fit questions. 206-767-0307

Primus K1 PulloverSizing Information

Height 5' 8" - 6' 2"

Short: -2 Inches in Sleeve and Torso

Long: +2 Inches in Sleeve and Torso

SizeChestSleeve
s36-3733
m39-4034
l42-4335
xl45-4636
2xl48-4937
3xl51-5237
4xl54-5537
Measurements in Inches

Chest Widest part of chest

Sleeve Center back of neck to shoulder seam to sleeve hem edge

silhouette diagram

Fit Information

Standard True to Size | Active Layering

silhouette diagram
Product is Standard Fit, developed to accommodate up to two layers, for cross-environmental versatility

Expedition Oversized | Static Layering

silhouette diagram
Product is Expedition Fit, developed to accommodate up to four layers, for extensive use in extreme weather

Learn more about our layering systems

System Builder

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