- The Synchron Classic features a new compression molded EVA midsole which is current in most modern running shoes. The dual density construction remains true to the original version from the early 1990s.
- The upper materials have been improved to premium pigskin suede from synthetic overlays while the original mesh appearance remains true to the era. To modernize the silhouette.
- Karhu makes the Air Cushion technology both visible and functional in the outsole. Most importantly, Karhu keeps the unique Synchron lacing structure which served as a way to tighten the forefoot upon repeated use.
- We recommend taking half size more than your regular EU size