On Running | Cloud X 4 | Men's | Black/Eclipse Width:D (REGULAR) Lens: Polarized - Shatterproof polycarbonate

Lens: Polarized - Shatterproof polycarbonate lenses with 100% UVA / UVB protection from UV Rays

XL: 21 1/2"

designed for maximum comfort during intense runs

Reduces muscle fatigue and tightness

Padded memory foam collar for a comfortable and locked-in fit

On Running | Cloud X 4 | Men's | Black/Eclipse Width:D (REGULAR) Lens: Polarized - Shatterproof polycarbonateOn Running Footwear Collection Men's Women's Apparel On Cloud X 4: The Ultimate Cross Training Shoe for Runners & Athletes Designed for runners who cross train, the On Cloud X 4 delivers the perfect balance of cushioning and ground feel, making it ideal for everything from runs to HIIT workouts. Built with Helion foam cushioning, it provides soft landings while the X shaped Speedboard enhances propulsion and flexibility for seamless multi directional