Airblaster Women's Beast Crux Insulator Nai Spruce 2026Pound for pound, the hardest hitting and most breathable technical insulator anywhere. 100g Primaloft insulation and 20D micro ripstop nylon shell assure packability, while a combination of Airtech 3D Eco and Schoeller softshell under arm allow the garment to stretch, breathe, and transport moisture better than any insulator you've ever met. One handed hood cinch allows for on the fly adjustment. Fit is kept trim for functional layering.