This is a type of Rider Belt featured in Kamen Rider Kabuto.
It is worn by Kamen Rider Thebee, Kamen Rider Drake, Kamen Rider Sasword, Kamen Rider Punch Hopper, Kamen Rider Kick Hopper, Kamen Rider Ketaros, Kamen Rider Hercus, and Kamen Rider Caucasus. Among these, the versions used by Punch Hopper and Kick Hopper feature a buckle that unfolds; attaching the Hopper Zecter to this mechanism allows the user to transform into the respective Kamen Rider.

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