Flex: 1:1 Firm Flex PowerUp tongue
Liner: Infinite Ride 5 liner with Dryride heat cycle lining, Tuff cuff, and Rad pad.
Lacing System: Speed Zone lacing system.
Footbed: Level 3 Molded EVA Footbeds with ESS support shank, dual density cushioning and Aegis antimicrobial coating.
Additional Features: Easy slide articulating cuff. Total Comfort construction. Shrinkage footprint reduction technology. Snowproof internal gusset. Heel wedge inserts. Vibram Xwing outsole with Ecostep plus rubber (50% recycled) and ReBounce cushioning with sleeping bag reflective foil.