Kenai ULTRA Jacket

The Kenai ULTRA is an incredibly lightweight yet durable synthetic fill jacket that breathes far better than other insulation layers, keeping you comfortable during strenuous activity. Ideal as a super-warm mid-layer, or as an outer layer piece during cold dry weather.

• 13.1 oz.
• Toray 100% Nylon, 51g Toray Stunner Stretch 30D
• Toray 3DeFX+ synthetic insulation – 90g front / back / upper sleeves
• Toray 3DeFX+ synthetic insulation – 60g sides / collar
• Highly Breathable
• Toray DWR

More Olive Arriving September 2020

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SKU # 50025
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  • lifetime warranty on all our gear

Product Overview

The ULTRA name in a KUIU product signifies a priority for streamlined design and ultralight weight. Combining industry leading fabric and hardware with Toray 3DeFX+® insulation has opened the door to a category of highly breathable insulation pieces for active use, that are perfect for high-output cold weather mountain hunting applications.

3DeFX+ synthetic insulation is the first of its kind to incorporate continuous fiber technology. The long spiral strands of fill are loftier and warmer than any other synthetic insulation on the market, and don’t require fabric coating to keep the insulation from migrating through the fabric.

Kenai ULTRA Jacket features insulation mapping, which positions higher insulation around your core for warmth, with lighter insulation on the sides of the body and arms for improved range of motion and more comfortable layering.

The 30D Stunner Stretch® nylon face fabric is strong, light, and dead quiet. Uncoated fabric and insulation mapping allow us to make a jacket that breathes at an exponentially higher rate, keeping the user dryer, warmer, and more comfortable during long climbs and extremely active use.

• Insulated mid to outer layer
• High warmth-to-weight ratio
• 2-way stretch fabric
• Quick drying
• Wind resistant
• DWR to repel water
• Zippered hand pockets
• Zippered chest pocket
• Zippered pit zips
• Articulated elbows
• Adjustable hem
• YKK Zippers
• NYLON 66 cording
• DURAFLEX hardware

Compared to original Kenai: streamlined silhouette, conceal zip pocketing, stretch binding finished cuffs, updated Nylon 66 cording.


3DeFX+® by Toray

Warmth and Flexibility Intersect

Toray’s 3DeFX+® combines insulation made from coil-shaped fibers and stretch fabrics to provide unmatched warmth and freedom of movement. Its continuous fiber technology is loftier and warmer than other synthetic insulation options, and perfect when the need for extreme warmth and flexibility intersect.

Featured in our Kenai ULTRA Hooded Jacket, Insulated Snap Shirt, and Kutana Hybrid 3DeFX+ Jacket

Kudos XR DWR


K DWR® (KUIU Durable Water Resistant)

K-DWR is the first line of defense for keeping you dry. It keeps water from penetrating the outer-layer fabric, which promotes breathability and performance.

Featured in all our Rain Shells, Guide Series, Tiburon Products, Chinook Products Alpine and Attack Pants

Stunner Stretch

Stunner® Stretch Fabric by Toray

Lightweight, Stretchable Comfort

Toray develops a new fabric technology and KUIU brings it to Mountain Hunters first! Ultralight, down-proof Stunner Stretch fabrics stretch as you move and put a layer of luxurious comfort between you and the warm softness of KUIU’s premium Polish down. And, of course, Stunner Stretch minimizes bulk and weight.

Featured in our Superdown Products

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