A collab between MK1 YoYos and Turner Return Tops released in January of 2024. These feature specially engraved Flat Cap Side-Effects that say “TRT/MK1” on them.
First Production Run
2nd Production Run
YoyoExpert Edition
YoyoExpert got an exclusive colorway during the 2nd run of the Bathysphere with its own specially-engraved Side-Effects. These Side-Effects have a dragon on them, along with the YoyoExpert logo.
