High performance even when the elements are against youThe Ultratac™ outsole gives you elite grip, while the D3O® insole provides added protection and vibration reduction. The BOA® Fit System allows for easy micro-adjustability for on-the-fly adjustments, while the tuned midsole of these MTB winter shoes deliver additional performance, comfort, and power to every pedal stroke. Key Features:Clipless mountain bike shoes with BOA®BOA® Fit System provides on-the-fly adjustabilityUltratac™ outsole for elite gripD3O® insole for added protection and vibration reductionSpecifications:BOA® Fit System for micro-adjustability Tuned midsole for performance and comfort Ultratac™ outsole for elite grip High collar helps keep dirt, debris, and moisture out of your shoe D3O® insole for added protection and vibration reduction