Airbase Base Layer - Bottom
Airbase Base Layer - Bottom
Airbase Base Layer - Bottom

Airbase Base Layer - Bottom

FG icon

Best next-to-skin layer in the world

Regular price $69.00
Layer: Base Layer
Shipping calculated at checkout.

🚚 FREE Domestic Shipping On $299+ Orders


Made for Eberlestock in Finland by people who know how to stay warm when it’s cold, this is the best next-to-skin layer in the world. Polypropylene is widely known as the best wicking fabric, but even with traditional polypropylene you can feel periods of damp chill when your body builds a layer of sweat or you simply get wet. But with the Airbases big air pockets, you have nothing contacting the majority of your skin surface, while adjacent polypropylene wicks moisture, so you always feel dry. You can wear pretty much anything over the top of it and feel comfortable and dry, in any weather. And if you’re out on a day that gets hotter, you simply expose the base layer and, voila, you get instant full-blown cooling. So you can literally wear this stuff right into a warm day, and regulate your temperature more easily than with any other garment. Made of polypropylene with silver ion scent control. Pants are full length with elastic waist band and knit cuffs.


  • Color: Gray

Airbase Base Layer Demonstration

We expect our customers to be happy with our products, and the very low rate of returns that we get tells us that we’re on the right track. If you need help with something, or don’t understand how something’s supposed to work, the first thing that we invite you to do is to contact us. We’ll be glad to spend what time is necessary to solve your problem.

Eberlestock will issue a full refund for any item still in new and sellable condition that has been returned within 45 days of purchase directly from Eberlestock. Items purchased through alternative sites or dealers must be returned to them. We politely request you return items with the original tags still attached if possible. In some cases, missing tags and bags may result in a 10% restocking fee. Items with excessive pet hair, odor or dirt will be returned to the purchaser without refund.

  • Big air pockets
  • Polypropylene material
  • Full blown cooling
  • Fully Taped Seams
  • Ion scent control
  • Elastic waist band
  • Knit cuffs


With Airbase’s big air pockets, you have nothing contacting the majority of your skin surface, while adjacent polypropylene wicks moisture, so you always feel dry and warm.


Designed for a close-to-the-body feel with a four way stretch material that won’t hold you back.


With a water resistant, yet-extremely breathable membrane and 4-way stretch, mid weight layers provide excellent warmth-to-weight ratio to keep you comfortable without weighing you down.


Technical, versatile, lightweight, and built to last. Made of 4-way stretch polyester with a DWR finish, providing a close riding, athletic fit with a cut that gives unrestrained freedom of movement.


Featuring 80gm Primaloft insulation, packable into its inside-chest pocket, breathable, and touting a superior warmth-to-weight ratio, Eberlestock cold weather gear is built to perform.


Four-way stretch fabric with a 40K+ breathability rating and 20K+ waterproofing will keep you dry when it rains -- and will not cause it to rain condensation inside the jacket when you are climbing up a mountain.

Eberlestock Sizing Chart

Customer Reviews

Based on 12 reviews
Best base layer I've ever worn

Owned a set of these for 4 years now. Used them not only for military but civilian life also. 20 degree weather and saturated cloths but with these on you and you won't even notice. Might look like you are gearing up for the gay club and pricey but well worth every penny.


Airbase Base Layer - Bottom

No doubt this will be awesome, tested with light use

Went sledding for an hour with the bottoms and top, under jeans and a northface apex jacket with Tshirt. Sledded for an hour in 20 degrees fahrenheit, jeans were completely soaked.

I never felt cold, or chilled even when the lower was soaked with my jeans. Body heat from walking climbing back up kept me warm.

They're just better

In the backcountry no one will see you, use stuff that works better. These work better. Learned of the concept from Andy Kirkpatrick bigshot climber who recommends a Norwegian brand that you can't really get in the states. Glad that Eberlestock has a product just as good available here.


Airbase Base Layer - Bottom