Primus K1 Long John

$55.00

Available

Color
Black
Manatee Grey
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 K1 - Primus Long John baselayer. Wool balanced with synthetic fibers delivers long-lasting durability, simple wash cycles, and the fast moisture transport your layering system needs. Flat seams ensure bulk-free layering, and a specialized fly provides support and fuss-free access (even with gloves).

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.

Package Deal

The Ballhalla™ fly keeps you comfortable all day long with anatomical support and minimal bulk, and the unique design ensures easy access even while wearing gloves.

Fuss-Free Foundation

Flat-seam construction ensures all-day comfort, delivering a smooth next-to-skin feel and reducing bulk when layering up.

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)
    7.1 oz.
  • Wind Resistant
    No
  • Breathable
    Yes
  • Moisture Wicking
    Yes
  • Fast Drying
    Yes
  • Pockets
    None
  • Source
    Imported

Trade Agreements Act Compliant
Designed in Seattle. Imported.

Customer Reviews

Based on 28 reviews
89%
(25)
11%
(3)
0%
(0)
0%
(0)
0%
(0)
L
L.W.
Comfy

Great piece of kit.

T
T.O.
K1 Long John

I have purchased a couple of pair of these. Great fit at a good price. I wore them this past weekend on a camping trip, Friday night got pretty cold and these helped to keep me warm. Great quality as I have come to expect. I see these serving me well for years to come.

B
B.W.
Great early season base layer

I wore the Primus K1 long John on a turkey hunt last week. Temperatures in the morning were in the 30s. Midday temperatures in the 60s.
This base layer kept me comfortable all day

K
K.H.
Sweet long john

Love this. I haven't had much time to use it (the time of year) but top notch construction that I know will last a long time.

R
R.F.
Worth it

Not only are these comfortable and sleek but these are probably will be my go to base layer. Its thin but it doesnt sacrifice quality. I have two pairs and theyve been the best I’ve owned.

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

Primus K1 Long JohnSizing Information

Height 5' 8" - 6' 2"

Short: -2 Inches Inseam

Long: +2 Inches Inseam

SizeWaistHipInseam Regular
S30-3137-3829
M33-3440-4130
L36-3743-4431
XL39-4046-4732
2XL42-4349-5032
3XL45-4652-5332
4XL48-4955-5632
Measurements in Inches

Waist Preferred Pant Waist

Hip 7" Below Preferred Waist

Inseam Regular Crotch to floor

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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