Flex: 1:1 PowerUp plus tongue
Liner: Imprint 3x Liner with heat cycle lining, Tuff cuff, and Rad pad.
Lacing System: Speed Zone lacing system.
Footbed: Level 2 Molded EVA Footbeds with ESS support shank and Aegis antimicrobial coating.
Additional Features: Total Comfort construction. Shrinkage footprint reduction technology. Snowproof internal gusset. Vibram Ecostep rubber outsole (30% recycled) with rubber ice spikes and sleeping bag reflective foil.