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 BUILDERSPECS
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Layer Level5
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Body Material7.9 oz. Verso Weave™ 94% polyester/6% spandex first layer; 4.28 oz. 86% nylon/14% spandex softshell
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Insulation60g Polartec® Alpha® Insulation
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HoodInsulated with adjustable crown
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PocketsZip hand pockets, external left chest zip pocket, internal right chest zip pocket
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Weight (Size L)29.6oz
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DWR/Moisture WickingYes
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Wind ResistantYes
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BreathableYes
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Fast DryingYes
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Zipper PullsYes
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SourceImported
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.
Need Help? Contact us with any size or fit questions. 206-767-0307
K5 - Aptus JacketSizing Information
Height 5' 8" - 6' 2"
Short: -2 Inches in Sleeve and Torso
Long: +2 Inches in Sleeve and Torso
| Size | Chest | Sleeve |
|---|---|---|
| s | 36-37 | 33 |
| m | 39-40 | 34 |
| l | 42-43 | 35 |
| xl | 45-46 | 36 |
| 2xl | 48-49 | 37 |
| 3xl | 51-52 | 37 |
| 4xl | 54-55 | 37 |
Chest Widest part of chest
Sleeve Center back of neck to shoulder seam to sleeve hem edge
Fit Information
Standard True to Size | Active Layering
Expedition Oversized | Static Layering
Learn more about our layering systems
System Builder