Equine Fusion Ultra Jogging Shoe size 16 converted to Flex Boot (Regular)

Sizing across brands only works through the millimetre band, never the number. Equine Fusion Ultra Jogging Shoe and Flex Boot (Regular) both publish in millimetres, so a Equine Fusion Ultra Jogging Shoe 16 (hoof length 151 to 160 mm) is matched by finding the Flex Boot (Regular) size that covers the same length.

The Ultra length bands are offset from the Active's whole-centimetre bands, so an Active 12 is not an Ultra 12. Match the Ultra by its own length band and width band.

Flex fits within plus or minus 5 mm of the listed width and no longer than the listed length. A naturally round or upright hoof wants the Flex Wide, whose length and width match, rather than the Regular.