When combining accessories and adapters, the low load capacity / payload is relevant.
Contour Adapter · black
For bags on seat posts Ø 25-32 mm
The compact adapter allows Contour bags to be quickly and securely attached to the seat post − ideal for bikes without a carrier. Two stainless steel clamps for Ø 25−28 mm and Ø 28−32 mm are included (an Oversize Clamp for Ø 32−36 mm is available).
We don‘t advise the use on carbon- or other lightweight-seatposts or recommend to take advice from the manufacturer.