Brompton Bike -  Garmin Varia Saddle Mount
Features 
- Suitable for Garmin Varia 
- Light weight 
- Durable 
Package Constance
- 1x back plate & mount 
- 1x replaceable mounting plate 
- All required bolts
Your saddle will need the attachment displayed in the photo.
Brompton Saddle and Garmin not included