Extreme Jacket - Fortress Clothing
Extreme Jacket - Fortress Clothing

Extreme Jacket

Regular price$219.99
Shipping calculated at checkout.
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  • Inventory on the way

Made in the USA (-35˚F to 50˚F)

The Extreme Jacket offers unbeatable resistance to the elements - it withstands rain and wind, and won't let you down in cold weather. Experience amazing warmth-to-weight ratio with Foam Clothing's revolutionary new formula!


Full Dual Head YKK Center Front Zipper
Patented AERIS 500 Insulation Technology (½” / 13mm of loft)  
2 Insulated Hand Pockets
Adjustable Draw Cord at Waist
Lower Side Slits for Ease of Movement

– 100% Polyester Mesh Lining
– 100% Polyester Micro Rip-Stop Taffeta with DWR Finish

Weight 30 oz
Dimensions 12 × 12 × 3 in

XS, Small, Medium, Large, XL, 2XL, 3XL

Patented Technology

About our brand

"With Fortress, you can wear less layers of clothing, and have less weight with a more dynamic temperature range. You can go from it being 50 degrees and jump into frozen Arctic water and have it be 20 degrees or 30 degrees outside and still feel comfortable.
-- Outdoor Media Company Owner

Outdoor Documentary Filmmaker


"The Fortress base layer was a game-changer. It allowed us to film on days that we normally wouldn't have been able to and we could stay out in the cold longer than the camera equipment could handle. That's when I was really sold on it. The battery life in our camera gear couldn’t keep up with Fortress. This is next-level stuff."

No Cold Chills!

"With other clothing, if you exert yourself at all and start sweating, you get cold. Fortress is incredibly unique. When you get wet, you stay warm.”
-- Outdoor Enthusiast



"I get tired of putting layers on and taking them off again. Fortress is
insulating and breathable at the same time, so it keeps you comfortable at a
wider range of temperatures -- even if you're exerting yourself and sweating
in the cold."
-- Peter Smith

Mt. Pleasant Ut

All of the planning, preparation and time it takes to play outdoors is totally worth
it – except when someone gets cold and you have to call it a day. Staying
warm, even when you’re soaking wet, allows you to continue to hunt, fish, camp and ride without having to sacrifice safety.

Mt. Pleasant Ut

"You can think better when you're warm and not shivering and shaking. I've been
out in midwinter -- particularly in directing traffic. You focus a lot on
being cold instead of doing your job. Anytime you're distracted, you're more
prone to making mistakes or overlooking something that's important. I hated
being cold."
-- Police Officer James

Mt. Pleasant Ut

"Fortress Clothing allows me to exert myself in the wilderness and sweat in the winter
time months, and not be concerned that I'm going to die of hypothermia,
versus cotton or any other type of material out there. Fortress Clothing
allows you to mitigate your body moisture, because even when it's wet, it
still heats me up, and I haven't found anything else that can even come
-- Prepper

Mt. Pleasant Ut

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Customer Reviews

Based on 5 reviews
Garret Pardee
Extreme mid layer jacket

The extreme mid layer jacket checks off every box on my list of desirable characteristics for a winter jacket. I already own plenty of duck down outer shell parkas, but I sought a jacket that will remain warm and keep its shape even after getting damp from sweat or rain. Overall, this extreme jacket was an excellent product purchase that I am very happy with because it fits under all of my outer shell jackets. I highly recommend this product.

Greg Warburton
Fortress Clothing

Any of Fortress Clothing will not leave you cold! at ALL!
I usually Have to take the Extreme Jacket off throughout the day it works so well!!

Barry Gardner
Is their a 6.5 star rating?

Fortress has tremendous clothing!! Their personal involvement is outstanding
They make sure the article of clothing you're getting really works for you!!

Makes working outside enjoyable again

I bought it for my dad who loves working outside but takes hours to warm up after coming back in. He quickly called me to tell me how much he has loved the coat. He can move so well in it because their is no longer need to as many layers. It warms him better then anything he has ever warn.

Very warm

Very easy to put on and take off and keeps me very warm. The only thing that would improve them is if they had nice comfortable pockets to rest my hands in.