Feel solid and secure on wrist with 2 side buttons folding clasp</br>Easy snap in with lug included attached to straps</br>38mm Band - Suitable for 150-220mm Wrist size, 42mm Band - Suitable for 155-225mm Wrist size</br>Instructions, resizing tools and screwdriver are included,</br>For more stylish replacement band, please search "HandyGear Apple Watch Bands"</br><br/>http://www.amazon.com/gp/product/B01N3TXKG7