FXR Men's Elevation Dual BOA Ice Fishing Boots - Features: Warmth Rating: 7/10; Stiffness Rating: 7/10 HydrX Pro membrane 600 g Thinsulate insulation New lightweight, slim design for aggressive MTN & trail riding Engineered to have positive fit & feel, with maximum flexibility, stability & protection BOA Dual zone specifically designed for increased flex & durability 20 mm Thick Dual-zone BOA Fit System; H4 Coiler Tongue dial; H4 Remote dial; HydrX Pro membrane; 600g Thinsulate insulation; New lightweight, slim design for aggressive MTN & trail riding; Engineered to have positive fit & feel, with maximum flexibility, stability & protection; BOA Fit System provides a micro-adjustable, precision fit, engineered to perform in the toughest conditions; 20mm Thick EVA midsole for maximum impact absorption; Low profile toe box; Minimal seams in sled-contact areas; Velcro tongue cover for added protection & comfort; Front & rear pant cuff attachment system; Fixed liner with fur lining; FXR high traction rubber outsole; Toe kick - Clean snow & ice with ease;