Our Finest 1000 Fill Power down smokes 800FP rivals in frozen timber. You get a quiet, packable, stretchy layer that's more breathable than any down product out there. Stop hauling bulk. Max out your warmth, drop the weight, and kill every cold spot. 4IL is the apex layer for the deep-freeze hunts, the high-country life, and everything between.
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Features
1000 Fill Power goose down insulation
Windproof seamless stretch fabric
Breathable ultra-lightweight construction
DWR Water-repellent finish
Windproof bottom and cuffs
YKK® zippers with Hypalon® pullers
Two outer pockets + two inner compartments
Packable in its own pocket
Breakthroughs
1000 Fill Power - elite-grade goose down insulation providing maximum thermal efficiency with minimal weight.
Engineered Stretch Fabric - seamless fabric blend delivers mobility and comfort with enhanced resistance to snags and tears.
Technical Down Chambers - strategic construction maximizes down loft for exceptional thermal efficiency and packability.
Outer jacket: 50°F to 14°F (10°C to -10°C) over base/mid layer
Layered system: 32°F to -22°F (0°C to -30°C) when combined with outer shell and base/mid layers
Weight: 13.3 oz (Size M); 377 g (Size EU52)
Layering & Fit
Layer:4th Insulation layer [4IL] Fit: Precision fit - sized to fit over underwear layer [1UL], a base layer [2BL] and a mid layer [3ML].
Warranty & Care
Care Instructions: Machine wash warm - below 90°F (30°C) with similar colors. Do not use bleach or fabric softener. Tumble dry low. Dry away from direct sunlight. Do not iron. Warranty: 2-year warranty - Guaranteed against manufacturing defects.
Pairs well with
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World's Lightest, Warmest, Ultra-Compact Hunting Down Jacket - Packable Puffy - Best Ultralight Puffer
Ultra-lightweight hunting down jacket is the best in its class, period. Built to decrease the weight of your clothing while tremendously increasing cold insulation efficiency thanks to its unmatchable moisture management. Featuring the world's finest 1000 Fill Power down and the most innovative seamless stretch fabric with superior breathability, thermoregulation, freedom of movement, and mobility, this hunting puffy jacket is anatomically tailored for unmatched Men's, Women's, and Youth's comfort.
Unfair Advantage and Efficiency of Weight to Warmth Ratio - Unbeatable by the Best Product of Any Leading Quality Hunting Clothing Brands
Wear the best down jacket for hunting as an insulation layer beneath the outer shell in severe conditions from 32°F to -22°F (0°C to -30°C) with mid-layer and/or base layer. Use it as an outer jacket in warmer conditions from 50°F to 14°F (10°C to -10°C) with just a base layer.
Best Hunting Puffy Jacket - Packable Puffer for Hunting
Made with 1000 Fill Power goose down - the most expensive, most efficient, and highest quality down in the industry. The 1000FP down is so fine and rare that it represents only 2% of the world's down yield, and through 2025 is exclusively used by Hillman in the hunting clothing industry.
✔ 1000FP rare goose down with unmatched efficiency
✔ Innovative seamless technology fabric
✔ High breathability down-proof shell-fabric
✔ Stretch for freedom of movement
✔ Packable in its own pocket
✔ All YKK® zippers with Hypalon® pullers
✔ DWR water-repellent finish
✔ Two outer pockets + two inner compartments
✔ Seamless shoulder yokes
✔ Only 13.3 oz / 377g (size M)
Superior Down Technology
The quality of 1000FP down provides superior cold insulation with minimal weight. Our down clusters trap more air than any other down in the world, delivering the best performance for ultra-lightweight thermal insulation.
Revolutionary Fabric Technology
The fabric represents a world innovation through its unique weaving that seamlessly creates the down chambers. Extremely breathable, the fabric doesn't need down-proof coatings or membranes that could block breathability. Instead, its tight weaving technique provides superior down-proof performance. This super-tight weaving technology effectively blocks thorns while making the fabric stretchy for excellent comfort and freedom of movement. These qualities make the fabric a bold symbol of innovation and technological perfection.
Ultimate Packability
This hunting jacket has no equal in the industry and packs down into its own pocket, making it the perfect companion in your hunting backpack.
Enhanced Hunting Experience
Gear up with this premium ultra-lightweight down hunting jacket and discover how advanced technology and innovation will enhance your hunting experience in the cold winter days.
[Down clusters qualities]
The quality of 1000FP down provides much better cold insulation with less weight.
Our down clusters trap more air than any other down in the world and deliver the best ultra-lightweight thermal insulation.
[The efficiencyof different down qualities with the same weight to trap air]
The fabric is World innovation because of the way of weaving that seamlessly creates the down chambers.
Extremely breathable, the fabric doesn't have downproof coatings or membranes that may compromise breathability. However, its tight weaving technique provides superior down-proof function.
This super-tight weaving technology can block the penetration of thorns and is so innovative indeed, makes the fabric stretchy for excellent comfort and freedom of movement.
Thanks to these qualities, the fabric is a bold symbol of the innovations and perfection of technology today.
The jacket has no analog in the hunting clothing industry and is so compact that it can be packed into its pocket to be the perfect companion in your hunting backpack.
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Gear up with a premium ultra-lightweight down hunting jacket to find out how the advantages of modern technologies and innovations will enhance your hunting experience on cold winter days.
Exponential Thermal Performance Through Layering
The 4IL Down Jacket serves as your critical mid-insulation layer, trapping warm air while allowing moisture transfer. This systematic approach is the smartest way to make your clothing work most efficiently.
Mix and match layers for optimal comfort across varying conditions, from mild afternoons to brutally cold mornings.
Hillman's 6-Level Layering System transforms how you approach cold weather hunting. Each layer works in synergy to boost the next, exponentially amplifying thermal efficiency.
4IL Hunting Down Jacket - 1000 Fill Power in Your Pocket
The 4IL transforms from full-size jacket to compact bundle in seconds, disappearing into its own integrated pocket. At under 14 ounces, it packs smaller than a water bottle while delivering 1000 Fill Power performance when conditions demand it.
Whether you're climbing to a distant stand, tracking through changing terrain, or facing unexpected weather drops, the 4IL Hunting Jacket stays ready without weighing you down.
No more choosing between comfort and mobility. Simply pack it, forget it, and deploy instant warmth when nature turns hostile. Ultimate convenience meets uncompromising performance for hunters who refuse to be caught unprepared.
Customer Reviews
Overall rating: 4.8 / 5 from 1764 reviews.
Heerlijk warme jacht/aanzitbroek, met een dunnen wollen lange onderbroek heb ik het niet koud gehad.
Store owner replied:
Thank you, Wout! Good to hear the Fusion trousers kept the cold out on the high seat with only a thin wool baselayer underneath. Enjoy them out in the field.
Afgelopen weekend op drukjacht in Duitsland, hele dag stil zitten bij 2 tot 8 graden, de mede jagers hadden het koud, ik niet dus heel blij met de schoenen.
Store owner replied:
Thank you, Wout! A whole day sitting still on a driven hunt at 2 to 8 degrees is exactly what the Aerogel boots were built for. Glad you were the one with warm feet. Good luck on the next drive!
Store owner replied:
Thank you for your review! Nice to see the winter hunting pants get a top mark from you. Good hunting!
I think the hoodie is just great, really comfortable and soft to wear, that's why I ordered a 2nd one right away. I normally wear size 4 XL, which made me wonder if it would fit at all, since it only goes up to 3 XL, and I have to say it fits perfectly
Review from www.hillmandeutschland.de
Store owner replied:
Thank you for your review! We're very pleased that the merino hoodie is so soft and comfortable that a second one is on its way. And good to know the 3XL fits you perfectly. Enjoy it, and good hunting!
Love the boots. Comfortable and tough.
Review from www.hillmangear.com
Store owner replied:
Thanks so much, Abe! Comfortable and tough is exactly what we build the DryHunt for, so it is great to hear they are working out on your feet. Have a great season out there!
Store owner replied:
Thank you, Gustavo! A 10 out of 10 for the winter jacket is great to read.
Love the coat, quite happy with it. I have asked a few times on how much the fill weighs, how many grams or ounces. They never say. Tell me it’s 1000fp and they can get me the weight of the fill but they never do. Disappointed with their customer service.
Store owner replied:
Thank you, Szabolcs! Glad the T-shirt is to your liking. Enjoy it out in the field.
Jakość Waszych produktów jest rewelacyjna - z pełnym przekonaniem kupuję tę odzież dla męża i syna, którzy bardzo ją sobie chwalą. Jako polująca Diana ogromnie żałuję jednak, że w stałej ofercie brakuje dedykowanej kolekcji damskiej. Z przyjemnością wyposażyłabym również swoją szafę w tak świetną termoaktywność. Bardzo proszę o pomyślenie o nas, kobietach w kniei!
The quality of your products is sensational - with full conviction I buy this clothing for my husband and son, who praise it very much. However, as a hunting Diana, I deeply regret that a dedicated women's collection is missing from your permanent offer. I would gladly equip my wardrobe with such great thermal activity as well. Please consider us, women in the knie!
Store owner replied:
Thank you, Ewa! It is good to hear your husband and son are happy with the gear. You are right that our range for women is still small. Your wish is noted and it does count when we plan new models.
All great. Very fast delivery and good quality
Review from www.hillmandeutschland.de
Store owner replied:
Thank you, Veiko! We're glad to hear that you find your Fusion Hunting Jacket lightweight and comfortable. We hope you enjoy wearing it on many outdoor adventures!
Store owner replied:
Thanks for your feedback, Veiko! We're happy to hear that your Fusion Hunting Pants feel lightweight and comfortable. We appreciate your support and wish you many great adventures outdoors!
Nice and comfortable!
Review from www.bg.hillmanhunting.com
Store owner replied:
Thank you for the lovely review! ❤️ We're glad you like the T-shirt and find it comfortable. Enjoy wearing it, and see you again soon!
Very high quality clothes! I recommend them!
Review from www.bg.hillmanhunting.com
Store owner replied:
Thank you for your trust and the high rating! We're glad you're happy with the quality of our clothes. Your recommendation means a lot to us!
Happy with the product!
Review from www.ro.hillmanhunting.com
Store owner replied:
Thank you, Mihai! We're glad you like the T-shirt. Enjoy wearing it!
My first pair was defective. After contacting customer service, I received a new pair. Excellent service!!! The shoes are great to walk in and feel wonderful. Thanks!!!
Store owner replied:
Thank you so much, Rob! We're sorry that your first pair had a defect, but we're delighted that our customer service team was able to help and get a replacement to you. It's wonderful to hear that your new boots feel great and are comfortable to walk in. We truly appreciate your patience and kind words. Enjoy your adventures in your DryHunt 2.0 boots!
Very nice warm socks! Breathable material.I recommend them!
Review from www.bg.hillmanhunting.com
Store owner replied:
Thank you for the recommendation! We're glad the socks keep you warm and comfortable while hunting. We wish you many successful outings!
This is absolutely the right choice! The boots are very comfortable,quality material and very warm! I recommend them!
Review from www.bg.hillmanhunting.com
Store owner replied:
Thank you for the great review! We're glad the boots keep you warm and comfortable. We wish you comfort and success on every hunting trip!
Very beautiful workmanship. Unique material.
Review from www.bg.hillmanhunting.com
Store owner replied:
Thank you from the heart! ❤️ We're glad you appreciate the beautiful workmanship and the quality of the material. Enjoy wearing the T-shirt!
Arrived right on time , Boots and socks super comfy. Looking forward to trying them out properly in Tromso Norway in January.
Review from www.hillmanhunting.co.uk
Store owner replied:
Thanks so much, Paul! We're delighted to hear that your boots and socks arrived right on time and are super comfortable. Tromsø in January sounds like an amazing adventure! We hope your Hillman gear keeps you warm and comfortable during your trip. Have a fantastic time in Norway, and happy hunting!
Store owner replied:
Thank you for the great feedback! We're happy to hear that your Aerogel 2.0 boots feel comfortable and supportive. We hope they keep your feet warm and comfortable on your upcoming hunting adventures!
For now I've put my bullets in the pouch and I'll be able to use it on my next driven hunt
Regards
DP
Review from www.hillmanchasse.com
Store owner replied:
Thanks, Bryan! We're thrilled to hear you're enjoying the feel and comfort of your boots. We appreciate you choosing us and hope they deliver excellent performance in the field!
3 outings with them and so far it's perfect
Review from www.hillmanchasse.com
Store owner replied:
Thank you Arnaud, that is nice to hear. A problem solved right away is what we want for every customer. See you soon and happy hunting!
Very good product!
Review from www.ro.hillmanhunting.com
Store owner replied:
Thank you for your feedback! We're happy to hear that you're pleased with the quality of our XPR hunting pants. We appreciate your support!
Amazing quality, looks 11/10, my father can't wait to use them!! Thank you!!
Review from www.ro.hillmanhunting.com
Store owner replied:
Thank you, Emma! We're glad the pants got 11 out of 10 right from unboxing. We wish your father many enjoyable outings in them. Happy hunting!
Customer Reviews
Overall rating: 4.7 / 5 from 60 reviews.
Love the coat, quite happy with it. I have asked a few times on how much the fill weighs, how many grams or ounces. They never say. Tell me it’s 1000fp and they can get me the weight of the fill but they never do. Disappointed with their customer service.
Store owner replied:
Thank you for your kind review. We’re glad to hear that everything met your expectations. Your feedback is greatly appreciated and helps us continue delivering the best service possible.
I am very satisfied with the product and transaction. Recommend this.
The jacket is surprisingly lightweight and very comfortable to wear. I always take it with me when I travel. Warm and light.
Review from www.hillmandeutschland.de
It was fantastic, feather-light, and could be stored in the smallest space. It will always be with me.
I'm a veterinarian, and the weather can change quickly.
Review from www.hillmandeutschland.de
The down jacket is excellent – warm, packs down small, and is wonderfully comfortable to wear. Exchanging it for a larger size was hassle-free and free of charge, including pickup by the courier service!
Review from www.hillmandeutschland.de
The jacket is great. Light, comfortable and it's obvious that it's high-class. I would gladly recommend it to someone else.
Review from www.bg.hillmanhunting.com
Customer support that makes your experience exceptional.
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