The OncaTherm Shirt is the perfect partner for cool weather conditions. Used as a base layer, can be used as a single layer or in combination with a layering system to keep your body warm and dry. We recommend to use it as an insulation layer.

  • 5 oz.
  • Lightweight camo fabric
  • Perfect for cool climates
  • Cooling effect
  • High breathability
  • Insulation effect
  • Carbonized yarn
  • Treated with silver ion to fight odors and bacteria
  • 4-way mechanical stretch
  • Complete free movements tolerance
  • Flat seams with soft touch inside
  • Slim fit to maximize insulation effect

OncaTherm fabric was developed by Onca, to be used as a base layer. We have used the material for our Oncatherm shirt, Neck gaiter, and Beanie. The fabric is composed of polyester, elastomer and carbon fiber.


The main property of this fabric is maintaining body temperature. For this, we have used polyester fibers combined with carbon fibers and an elastomer to stay close to the body to avoid loss of body heat.


Very comfortable material thanks to its elasticity, lightness, inner finish and scent lock function. The carbon fibers and silver ion treatment allows us to use the camo gear on trips where packing light is important.

The goal for developing the OncaTherm fabric is to keep your body temperature regulated and have a high breathability with sweat wicking to keep us dry while hiking.


Compared to other base layer fabrics in the market our OncaTherm has a higher resistance to snags and tears. This is achieved by the dense structure of the outer fabric and the high elasticity.


The fibers of the inner part of the fabric are a combination of quick dry polyester fibers and carbon fibers. This provides the OncaTherm fabric a perfect balance of warmth, breathability, and sweat wicking.

All fabrics developed by Onca are in collaboration with Gocotex, S.L and tested by Aitex textile research institute.

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Onca Gear

Durable, Breathable, Reliable Gear

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