Regular price $139.00 USD Sale price $139.00 USD
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Size XS
In stock
Description
  • Stay warm and secure in any climate with the BasePro Full-Zip.
  • Durable nylon construction for unbeatable comfort.
  • Four-way stretch and enhanced breathability for improved performance.
  • AERIS™ 250 insulation for reliable temperature control from -5°F to 70°F.
  • Sweat-wicking fabrics and antimicrobial elements eliminate odor.
  • Enjoy flexibility and warmth regardless of the weather.

Sizing:

Men: Runs long on torso, order your normal size for loose fit, size down for more snug fit. 

Male Example: 6'2 225lbs (large) fits snug XL fits loose

Women: Order one size smaller than your normal size for best fit.

Model 5'7 130lbs (Size Small)



Weight 16 oz
Dimensions 12 × 12 × 3 in
SIZE XS-3XL
Factors of Fortress

What makes us different

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Patented USA-Made AERIS Insulation

Provides unmatched warmth and comfort, designed to withstand extreme cold temperatures

Wind and Water-Resistant

Built to handle harsh weather conditions, keeping you dry and protected in the elements

Lightweight and Breathable

Offers freedom of movement and comfort without sacrificing insulation

Versatile Layering System

Can be worn as a base, mid, or outer layer, working seamlessly with other gear or jackets 1-2 layers is all you'll need using Fortress

Durability for Outdoor Adventures

Engineered for rugged use, ensuring long-lasting performance in outdoor sports and activities

Patented USA-Made AERIS Insulation

Provides unmatched warmth and comfort, designed to withstand extreme cold temperatures

Wind and Water-Resistant

Built to handle harsh weather conditions, keeping you dry and protected in the elements

Lightweight and Breathable

Offers freedom of movement and comfort without sacrificing insulation

Versatile Layering System

Can be worn as a base, mid, or outer layer, working seamlessly with other gear or jackets 1-2 layers is all you'll need using Fortress

Durability for Outdoor Adventures

Engineered for rugged use, ensuring long-lasting performance in outdoor sports and activities

Customer Reviews

Based on 16 reviews
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L
Lou S.
Warmest base layer ever.

I have the old insulated Cabelas bibs and parka, purchased years before Fortress clothing was available. It's well insulated, but Fortress is a new standard in insulation. I have the base layer, gloves, balaclava and insert for pack boots. I can wear lighter outer ware, so total weight is reduced. I wish I could justify 2 sets of cold weather gear. I am sure the Fortress gear would be lighter, and warmer.

E
Edward D.
Excellent Base Layer

Unlike the base layer with a half zipper this base layer is easy to put on and works well.

K
Kirk Hayles
Nothing like it in the UK

Previously ordered a quarter zip BasePro and very pleased but the full zip version is even more versatile as can be fully unzipped as you warm up. Fabulous quality and worth every penny - to me worth the postage cost to the UK.
These products are quite remarkable - just the one layer does it in ANY UK cold weather (which is far from extreme).

J
J.R.

Quite warm and comfy.

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4 Zip - Fortress Clothing
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4 Zip - Fortress Clothing
Seen On SHARK TANK

NEW PATENTED TECH

Our products are engineered with high-quality materials and feature patented USA-made insulation, ensuring that you stay comfortable no matter the weather