The rings feature two different designs: a normal HumaGear module with a blue circle and a black Rogue HumaGear module with a red circle. Each ring is made of silver925 and come in sizes: No.11, No.13, No.15, and No.17.
The HumaGear Module rings from Kamen Rider Zero-One will go for ¥11,000 (tax included) each and are scheduled for shipment in May 2020. Preorders are being accepted from March 25, 2020 at 11:00 JST until April 12, 2020 at 23:00 JST.
Source: Premium Bandai