Fantastic comfort for your feet - every day. The insoles with GelActiv technology provide excellent cushioning and shock absorption throughout the day compared to shoes without additional insoles. Thanks to the odor-reducing technology in the upper material, your feet feel fresh and dry all day long. The insoles are perfect for casual shoes, flats, and boots. Suitable for shoe sizes 35.5 to 40.5, and can be trimmed to fit.