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QuixDown, which is made from Polish goose down and 3DeFX+ which is made from continuous synthetic fibers. Both insulation types have performance advantages that will keep you comfortable on the toughest hunts. When deciding what’s best for you, consider your level of activity and the weather conditions.
QuixDown locks in heat and is 100% windproof, making it ideal for the times you can’t move to keep warm. Think glassing, still hunting, or while in a blind or treestand. Since down doesn’t breathe well, high level activities like hiking can result in a buildup of sweat and overheating.
Down has the highest weight-to-warmth ratio of any insulation and is very packable. It’s so lightweight, you’ll never regret having it in your pack.
3DeFX+ is designed to breathe well, allowing body vapor and sweat to evaporate, making it a superb choice for active hunt situations. Since it breathes well, synthetic insulations are not as windproof, however, layering them under a soft shell or rain gear will block out wind and help retain heat.
Breathable fabrics are also ultra-quiet, so insulation styles using 3DeFX+ have become a favorite of archery hunters.
The weather and conditions are the deciding factor on where you decide to layer your insulation. If it’s cold, dry, and clear, it’s suitable to wear it on the outside. If it’s cold and wet, layer insulation under your rain gear.
We offer two styles of fit among our insulating layers. A mid-layer fit is sized to fit close to your body with minimal layers underneath. An outer-layer fit is sized to fit over base layers and mid layer insulation. For example, if you’re a size large, these combos would layer well together:
If you’re planning on wearing a garment sized with a mid-layer fit over multiple layers or you prefer a roomy fit, consider sizing up one size.
This series is geared towards those seeking ultralight packable insulation, ideally worn under rain gear or over base layers when brush-busting durability isn’t required. They’re so lightweight, you’ll think we shipped you an empty box, but they’re surprisingly warm for how light they are.
PROTECTION: Water-Resistant, Wind-Resistant, Insulated
MATERIAL: 12D Stunner Stretch Nylon, 850+ FP Water-Resistant QuixDown
FIT: Mid Layer Fit
The Super Down PRO series is the ideal insulating layer when temperatures plunge and during low-level activity—like glassing or sitting in a stand. Super Down PRO is insulated with twice the down as Super Down ULTRA, making it KUIU’s warmest down insulation.
MATERIAL: 30D Stunner Stretch Nylon, 850+FP Water-Resistant QuixDown
FIT: Outer Layer Fit
CONDITIONS: Extreme Cold
The Kenai ULTRA series keeps you warm in cold temperatures without overheating. Breathing far better than other insulation layers, Kenai ULTRA keeps you comfortable during strenuous activity. They’re ideal as a super-warm mid-layer, or as a quiet outer layer during cold dry weather.
MATERIAL: 30D Stunner Stretch Nylon, 3DefX+ Synthetic Insulation
Designed with more durability than the average insulation piece, the Kutana 3DeFX+ is a lightly insulated outer layer, or as a mid-layer in colder conditions. Its Hybrid design positions highly breathable fleece along your back and under arm, with 3DeFX+ active insulation across the chest and tops of arms, where you need it most.
MATERIAL: 70D/80D Stretch Nylon 6/6, 3DefX+ Synthetic Insulation, Polyester Kairuishi Fleece
Built for extreme cold, wet, and windy conditions, the Gale Force Jacket and Pant combines a durable, 100% waterproof, seam-taped shell with highly breathable 3DeFX+ synthetic active insulation.
PROTECTION: Waterproof, Windproof, Insulated
MATERIAL: 70D/80D Stretch Nylon 6/6, Entrant Waterproof Membrane, 3DefX+ Synthetic Insulation
KUIU’s skin-to-shell layering system allows you to adjust your level of insulation to correspond with the facing weather, activity level, and personal preferences. Whether you decide on Quixdown, 3DeFX+, mid layer, or outer layer insulation types, understanding the purposes they’re engineered for will help you leverage their built-in performance advantages on your next hunt.
Learn how and why our Quixdown insulation will help you tackle the toughest and wettest hunts and how it outperforms the competition.
Watch Huntin’ Fool’s Jerrod Lile review the Super Down PRO, Super Down ULTRA, and Kenai ULTRA insulated hunting jackets. He goes over the insulation types, plus when and where each jacket is best.
Shaun Ayers provides an overview of the Kutana Gale Force Hooded Jacket and Pant. Five years in the making, KUIU's latest cold-weather hunting gear will keep you protected from the world's worst conditions.