Hi, the BBBike Extract Service supports now the OpenTopoMap style for garmin devices: https://extract.bbbike.org/?format=garmin-opentopo.zip see also https://extract.bbbike.org/extract-screenshots.html#garmin-opentopo -- Planet.osm extracts: https://extract.bbbike.org BBBike Map Compare: https://mc.bbbike.org/mc