Failed catastrophically after just 10km. This was at 30kph over a moderately bumpy section of road. The plastic lugs that hold it into the garmin mount tore off as shown. It's not clear whether this is a manufacturing defect (it looked fine when when I received it) or poor quality material, but this product is NOT fit for purpose. The good news: the included lanyard saved my phone from certain death. So, top tips: 1/ Don't buy this unless you only cycle slowly on smooth roads. 2/ Even then, use the lanyard, because this product will fail sooner or later.
Great Thanks!