Cavallo Entry Level Boot (ELB) size 5 converted to Cavallo Sport Boot

Sizing across brands only works through the millimetre band, never the number. Cavallo Entry Level Boot (ELB) and Cavallo Sport Boot both publish in millimetres, so a Cavallo Entry Level Boot (ELB) 5 (hoof length 142 to 149 mm) is matched by finding the Cavallo Sport Boot size that covers the same length.

The ELB sizes on length, then you pick sole width. If your width is 6 mm or more under your length, choose the Slim sole in that size; otherwise the Regular sole.

The Sport is the narrow cut, roughly 6 mm under the Simple in width. A round hoof whose width equals its length will pinch in a Sport and wants the Simple instead.