Flow Rival QuickFit Boot - Men's Double Barrel:EVA comfort panels improve fit around the ankle. Flow comfort foam with a vented tongue to reduce moisture. Comfort top cuff and velcro positioning tabs to eliminate tongue drifting. A custom flex zone in the forefoot improves fit across the toes while an anti-microbial finish eliminates odor-causing bacteria. Venting Flow Kush Footbed:Anatomical shape with heel contour and arch support. Single density EVA reinforcement for superior dampening and comfort. Vented to improve airflow and reduce moisture. Fly-Weight Kush Outsole:50% Weight reduction from our standard outsoles. Contour molded dampening midsole with torsion control internal shank. Super soft OC Kush heel insert will soften those harsh landings. High-abrasion anti-slip rubber in critical durability zones. Low-profile tread pattern. You don't need large lugs for superior grip. Quickfit:New loop through handle allows laces to tie on itself through the handle for better pull strength. Improved molded lace covers protect lower zone laces from being cut and chafed. Reduced friction and easier replacement. Integrated Harness:Internal harness with lace closure and locking hardware. Integrated into boot shell for optimized heel hold.