The ULTRA name in a KUIU product signifies a priority for streamlined design and ultralight weight. Combining industry leading fabric and hardware with Toray 3DeFX+® insulation has opened the door to a category of highly breathable insulation pieces for active use, that are perfect for high-output cold weather mountain hunting applications. The Toray 3DeFX+® synthetic insulation is the first of its kind to incorporate continuous fiber technology. The long spiral strands of fill are loftier and warmer than any other synthetic insulation on the market, and don’t require fabric coating to keep the insulation from migrating through the fabric.
The 30D Stunner Stretch nylon face fabric is strong, light, and dead quiet. Uncoated fabric and body mapped insulation allow us to make a jacket that breathes at an exponentially higher rate, keeping the user dryer, warmer, and more comfortable during long climbs and extremely active use.