New Sidi Ergo 5 running shoes from Ergo 4. New Tecno 3 system double closure, with Lorica patent microfiber top and nylon mesh.

• Tecno 3 system.
• Adjustable heel retention device.
  
• High Security Velcro.
• Heel Sidi.
  
• Replaceable heel.
  
• New Sole Twelve Carbon Composite.
• Color: matte red/Black.