On Cloud X 4 – Train Harder. Land Softer.

The Training Shoe That Doesn’t Ask You to Choose.

The On Cloud X 4 is built for the athletes who do it all — HIIT sessions, tempo runs, gym floors, and everything in between. Where most training shoes are optimized for one discipline and compromised in others, the Cloud X 4 is designed to perform across the full spectrum of high-intensity movement. The fourth generation of On’s most versatile training silhouette brings refinements to cushioning, stability, and lateral support without adding bulk or losing the shoe’s signature springy feel underfoot.

CloudTec® Cushioning

• CloudTec® Phase technology — On’s signature hollow cloud elements compress on impact and then lock together to create a firm, stable push-off platform. Soft when you land, responsive when you push.
• Helion™ superfoam midsole that retains its cushioning properties across a wide range of temperatures and training intensities — it performs the same whether you’re moving through a cold morning warm-up or a peak-intensity interval session.
• Speedboard® embedded within the midsole — a rigid propulsion plate that channels energy from heel strike through to toe-off, adding forward efficiency to every stride.

Training-Specific Construction

• Engineered mesh upper with targeted reinforcement zones across the midfoot and lateral edge — built for the directional cuts and lateral loading patterns of gym and court-based training.
• Dual-density heel construction for enhanced stability during weighted movements, plyometrics, and lateral drills where rearfoot control matters.
• Lightweight and low-profile build that transitions naturally from the gym floor to a treadmill run without feeling like a compromise in either direction.

Style Notes

The Cloud X 4 has the kind of clean, engineered aesthetic that works equally well in performance and lifestyle contexts. The structured upper and cloud sole unit read as athletic without being loud — it’s the shoe you wear to the gym and don’t need to change out of for the rest of the day. Available in a range of tonal and accent colorways suited to any training kit.

Details

• Style: On Cloud X 4 (Men’s)
• Best for: Cross-training, HIIT, gym sessions, tempo runs
• Cushioning: CloudTec® Phase + Helion™ superfoam + Speedboard®
• Upper: Engineered mesh with lateral reinforcement
• Retail Price: $170
• Sizes Available: US 3 – 12 (including half sizes)