Light. Responsive. And seriously quick. Lead training or racing in a shoe that's fast for everyone. Inspired by On's fastest shoe, the Cloudboom Echo for impressive breathability and performance; the Cloudflow 4 makes elite-level technology accessible to any runner. Take on training and racing in complete comfort.

Features:

• Use for: Road running, indoor running, training
  
• Best for: Fast training, racing, 10K, half marathon, marathon, tempo running, long interval sessions
• Road running style: Forward rolling - for picking up the pace
• Standard lacing: Keeps your feet secure
• Re-engineered upper:
• Lightweight woven upper for next-gen speed and breathability
• Offers a reassuringly secure fit whether you're training or racing
• Creates a more streamlined look for seamless comfort
• Good for the planet: uses 75% recycled polyester
• Explosive Speedboard® will catapult you to new personal bests:
• Spoon-shaped nylon blend
• Stiff, strong and lighter than before
• Loads every stride with spring-like energy
• CloudTec® in ultralight Helion™ dual-density superfoam combines for a fast, responsive feeling with fully cushioned road protection
• Low cushioning: For a faster and more responsive running experience
• Carefully positioned rubber grip traction pads mean turning tight corners just got easier at high speeds
• Regular fit: true to size
• Heel to toe drop: 8 mm
• Weight: 235 g