What Cavallo Sport Boot size 4 becomes in the Cavallo Simple Boot range, matched on the published hoof length and width in millimetres, with the fit caveats.
Updated 05 September 2026.
Cavallo Sport Boot size 4 converted to Cavallo Simple Boot
Convert a Cavallo Sport Boot 4 to the equivalent Cavallo Simple Boot size by millimetre band.
The measurement, matched across brands
Cavallo Sport Boot size 4 mapped onto Cavallo Simple Boot by the shared millimetre band.
lengthwidth
The conversion
| From | Cavallo Sport Boot size 4 |
|---|---|
| To | Cavallo Simple Boot |
| Cavallo Sport Boot 4 hoof length | 134 to 141 mm |
| Cavallo Sport Boot 4 hoof width | 128 to 135 mm |
| Nearest Cavallo Simple Boot size | 4 |
| Cavallo Simple Boot sizes that overlap | 4 |
Sizing across brands only works through the millimetre band, never the number. Cavallo Sport Boot and Cavallo Simple Boot both publish in millimetres, so a Cavallo Sport Boot 4 (hoof length 134 to 141 mm) is matched by finding the Cavallo Simple Boot size that covers the same length.
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.
The Simple is a square boot, width equal to length. If your hoof is clearly longer than wide, the Sport (narrower) or the Trek Slim sole fits better than the Simple.
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Cavallo Sport Boot size 4 converted to Cavallo Simple Boot?
A Cavallo Sport Boot 4 maps cleanly to Cavallo Simple Boot 4. Both cover the same length band, so it is a direct size equivalent.