Many Merrell styles use Vibram branded rubber soles. This material is specifically designed to be extremely durable!
The compromise for making the rubber hardy and resistant to wear and tear is they can be a bit slippery on smooth/wet urban surfaces. They are designed to last on very rough off-road terrain, being a hiking shoe.
Over time and with gradual use, the sole will roughen up and provide better grip on urban surfaces.
Any questions? Feel free to reach out to our Customer Experience team below.