Thermaplush™ soft, next-to-foot wicking layer for warmth Form-fitting B-Tek™ Foam lining for comfort Double B-Tek™ Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperatures Vapourized Aluminum Membrane for energy reflection and heat regulation PolyWool polyester wool blend for breathable warmth Hydromax™ layering for improved moisture management DiamondNet™ insulation for wind-resistant protection with
