Description:1. These silicon fastener rings adopt a non-slip design, which can be well inserted into the watch strap and will not easily fall off, offering protection to your device.2. Watch band loop for 18mm width strap (Watch or Wristband is NOT included), please carefully confirm the size before ordering3. Made of silicone material, light weight, durable for long time use. Which are soft and tasteless, comfortable and abrasion resistance, does not deform or fade easily.4. Flexible watch band keeper, just slide the watch strap fastener over the buckle without any tools. Only take a moment to replace , much easier to put on the watch by holding the band in place.Features:Material: SiliconeColor: BlackFit Strap Width: 18mm / 0.71-inchTotal Size: 22 x 8 x 9mm / 0.87 x 0.31 x 0.