Cloud X 4 vs Cloud X 4 Ad: which build suits training better?

The Cloud X 4 Ad has a wider sole platform with more surface contact, which gives better lateral stability for side-to-side movements like agility drills and court work. The standard Cloud X 4 is slightly narrower and lighter, better for straight-line HIIT and running. Both use the same Helion foam; the difference is purely in the sole geometry.

What is the FKA Twigs Cloud X and how does it differ from the standard colourways?

The On x FKA Twigs Cloud X is a co-designed collab between On Running and the artist FKA Twigs. The Desert and Lily versions feature tonal two-tone uppers and a more lifestyle-oriented aesthetic, with slightly softer colour choices than standard Cloud X colourways. The sole and construction are identical to the standard Cloud X 4.

How does On Cloud X sizing run for Indian buyers?

The Cloud X runs true to size, consistent with On Running's general sizing. The toe box is moderately wide, which works for most Indian foot shapes. If you have wide feet, On recommends going half a size up. The Ad variant fits the same as the standard despite the wider sole; the width difference is in the outsole, not the upper.