From Diemme:

Fontesi Low - is a mid top unisex sneaker with a diagonal zip closure. The sneaker feature an Italian-made handstitched rubber cupsole, and a padded insole lined with calf leather. All leathers and components are of Italian origin. The design origin comes from a technical mountain runner, changed to the unrecognizable to give a clean and minimal sneaker with the main feature being the zipper from Swiss supplier Riri that cuts down the upper. For technical reasons the Fontesi has the strongest zipper Riri produces in order to withstand the test of time.