K5 - Aptus Jacket

$225.00

SYSTEM LAYER GUIDE ?

Beyond System Layer 5

Available

Color
Black
Coyote
Rescue Red
US 1928
Size

This is a clearance item. All sales are final.

Highly Technical, Absurdly Comfortable

The Kyros edition of the A5 - Stretch Alpha Sweater, the K5 - Aptus Jacket delivers the best of both worlds by combining light, stretchy, and comfy construction with long-lasting durability and heat-packing insulation. Dynamic three-layer construction wicks up moisture and transports it out while hanging onto warmth, and the wind- and water-resistant softshell pairs with an insulated, adjustable hood to ward off nasty weather.

K5 - APTUS

USE GUIDE

WHEN TO USE
50°F and below. Fits over base layers and insulation layers, allowing use in a wide range of conditions.

PAIRS GREAT WITH
Baselayers, active insulation, and rain layers.

BENEFIT OVER OTHER LAYERS
Features 3-layers of fabric which offer the ruggedness of a softshell with the warmth of an active insulation piece.

Learn more about layering:

VIEW SYSTEM BUILDER

SPECS

  • Layer Level
    5
  • Body Material
    7.9 oz. Verso Weave™ 94% polyester/6% spandex first layer; 4.28 oz. 86% nylon/14% spandex softshell
  • Insulation
    60g Polartec® Alpha® Insulation
  • Hood
    Insulated with adjustable crown
  • Pockets
    Zip hand pockets, external left chest zip pocket, internal right chest zip pocket
  • Weight (Size L)
    29.6oz
  • DWR/Moisture Wicking
    Yes
  • Wind Resistant
    Yes
  • Breathable
    Yes
  • Fast Drying
    Yes
  • Zipper Pulls
    Yes
  • Source
    Imported

1st Layer Wicks

Double-knit Verso Weave™ fleece provides a blanket-soft feel and uses a circular grid pattern to create air channels, keeping you dry by funneling sweat up to the second layer.

2nd Layer Insulates

Polartec® Alpha® Insulation takes the hot sweat sent up from the first layer and then hangs onto the heat to keep you toasty while kicking the moisture up to the third layer.

3rd Layer Protects

The third and outermost layer uses a durable water repellent (DWR) finish to seal out freshly shed sweat and light rainfall, and features a durable softshell design with 4-way stretch to ward off winds and keep you mobile.

Easy-Fit Coverage

Stretchy, adjustable, and designed to go over climbing helmets, the hood ensures versatile fitting options when you need extra insulation and weather protection.


Trade Agreements Act Compliant
Designed in Seattle. Imported.

Customer Reviews

Based on 6 reviews
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S
S.C.
Nice light jacket

Jacket is thin and comfortable. Using it as my main jacket in MN. Doesn’t provide a lot of warmth but is cut generous enough that I can layer beneath. Fits like I expected an XL to. Plenty of pockets. On a very windy day, wind was still able to cut through it.

A
A.H.
Great jacket

Extremely comfortable, allows for full range of motion, very durable. Very warm without being heavy. Probably the best jacket I own.

D
D.K.
Aptus

Great performance, love the stretch.

B
B.W.

Great jacket. Great company

M
M.
My new favorite jacket

This is by far my new favorite jacket. Almost all of my other jackets have been relegated back to the closet. Despite how thin it looks, this is also one of the warmest jackets I've owned. Picking it up, you can actually tell it feels heavier than it looks because of the amount of insulating material sewn in. I've used this hiking in 28 degree weather with snowfall and never once felt cold with nothing more than a base layer underneath. This included periods of sitting/reclining against snow banks. Definitely going to have to pick up another one in a different color.

12

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