| Y Belt | |
|---|---|
 | |
| Device Type: | Transformation |
| Function: | Publicity gimmick used to entertain the crowds by transforming Yuki's clothes into his Yavais costume. |
The Y Belt is what Yuki uses to transform into Yavais. It is primarily used to entertain the crowds and has no real value in crimefighting. The process by which the belt transforms his street clothes into his hero costume is unknown, but it most likely works the same way as Ankaiser's Transforming Tie.