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3Defx+®

The Future of Synthetic Insulation

3DeFX+® is engineered to adapt to your body and give you unmatched flexibility, freedom & comfort

* compared to other leading synthetic insulators
THE STRETCHIEST BREATHABLE INSULATION ON EARTH

Garments made with 3DeFX+ insulation provide unprecedented elasticity that moves along with the body. With 3DeFX+, your insulation layer can stay on the whole day. 

GET TO KNOW 3DeFX+®

The innovative secret behind the Kooshin’s performance is 3DeFX+: a three-layer sandwich of breathable, stretchy shell and liner fabrics, surrounding three-dimensional stretch synthetic insulation. 3DeFX+ insulation is composed of four types of spiraling, hollow-core polyester fibers. This unique formulation provides lightweight, lofty insulation with incredible flexibility and stretchability. The shell and liner fabrics are completely breathable, stretch-woven nylons with a soft and supple hand. The 3-layer package provides unprecedented stretch and comfort for cold-weather aerobic activities.