The Karhu Synchron Classic OG revives a beloved running shoe from the early 1990s, updated with modern construction and premium materials. It retains its original design elements while incorporating contemporary comfort and performance features.

• Compression molded EVA midsole with dual-density construction
• Upper features premium pigskin suede and original mesh
• Visible and functional air cushion technology in the outsole
• Unique Synchron lacing structure for forefoot tightening