Kamik - Replay (Dark Brown) - Men's: 7.5" high boot. Nubuck leather upper with Neoprene collar. 200B Thinsulate(tm) insulation, a unique micro fiber developed by 3M, which has more surface area to trap warm air, insulating better than other high loft insulations, including down. It's less bulky for use in moderate cold conditions. Front zipper closure for easy adjustment. Compression molded EVA midsole. Outpace rubber outsole.