The "Quick Change (20 mm, Nylon)" strap does not fit the Garmin vivomove Trend, as it is intended for models such as Forerunner 645, Venu, Vivoactive 3 and various Vivomove models (HR, Style, 3) with a 20 mm strap width, but the vivomove Trend is not included in the compatibility list. The vivomove Trend apparently uses a different strap size or system [product data].
The quick-change wristband with a width of 20 mm is specially designed for the Garmin Venu SQ and Venu SQ Music. It is not directly compatible with the Garmin Venu 2 Plus, as this may have a slightly different bridge width, as mentioned in some reports. If you are looking for a black replacement strap for the Garmin Venu 2 Plus, you should look for specific straps for this model.