Flex: Medium Flex: 6 (1 Soft - 10 Stiff)
Fit: 1:1 Medium Flex PowerUP Tongue; Total Comfort Construction
Liner: Imprint™ 2 Liner; 3M™ Thinsulate™; Inner Lace Lock; Lock-Up Cuff
Lacing System: Speed Zone™ Lacing; Exclusive New England Rope Laces
Footbed: Level 2 Molded EVA Footbed
Sole: Low-Profile EST® Optimized Midsole; Sleeping Bag Reflective Foil; B3 Gel; Shrinkage™ Footprint Reduction Technology
Additional Features: Snow-Proof Internal Gusset
Ability Level: Intermediate-Advanced