100 Riyals

Qatar's shift to a hybrid substrate for this series was a deliberate durability decision — polymer-cotton composites resist the humidity and heat of Gulf circulation far better than pure cotton paper, which tended to degrade quickly in the region's climate. De La Rue had been supplying Qatari banknotes for decades before this issue, and the 2020 series continued that relationship through a period when several Gulf states were simultaneously modernizing their note designs ahead of the 2022 FIFA World Cup, which Qatar was hosting.

The security specification here is notably lean for a high-denomination note of this era — watermark and thread without windowed or color-shifting elements suggest the hybrid substrate itself was considered the primary anti-counterfeiting measure.