About the ZeRo 54mm
The ZeRo 54mm opened At Design Lab’s second product series in August 2023. Where the MoNo series is a W-shape, the ZeRo series is an O-shape (round profile) — the “zero point on a ruler,” a design baseline inspired by the Duncan Butterfly as the ancestor of modern string-trick yo-yos, and by the Anti-yo catalog (Eetsit, Bapezilla, YWET, Business, Sparrow). The “Shmoved ring” — a slightly recessed inner-cup ring — reduces string snagging and sleep loss during play.
Available in Silver/Space Gray (Smooth Ultimatte), Black/Pink, Snow Coating Edition (Oct 2023), and Silky Coating variants. ~$99–101 USD.


