K5 - Aptus Jacket
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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
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
Body Material7.9 oz. Verso Weave™ 94% polyester/6% spandex first layer; 4.28 oz. 86% nylon/14% spandex softshell
Insulation60g Polartec® Alpha® Insulation
HoodInsulated with adjustable crown
PocketsZip hand pockets, external left chest zip pocket, internal right chest zip pocket
Weight (Size L)29.6oz
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.
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.
Great jacket. Great company
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.