The numbering of the size corresponds to the measured bearing surface circumference from heel buttress to heel buttress and the shape of the freshly prepared hoof.
For horses and bigger ponys we have a round shape (F for Front) and a elongated shape (R for Rear).
For smaller ponys we have a mixed form of front and rear hoof shape (U for Uni).
290-400 mm in 10 mm steps
285-375 mm in 10 mm steps
225-275 mm in 10 mm steps
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Our biggest and smallest front shape F 400 and F 290
Our biggest and smallest rear shape R 375 and R 285
Our biggest and smallest shape for the little ones 275 and 225