The Irisbus Cristalis is a trolleybus manufactured by Iveco Bus (formerly known as Irisbus. It comes in two variants:
The ETB12 is a full-sized trolleybus that its competitors were the MAZ-ETON T203, Škoda 24Tr Irisbus and the Škoda 30Tr SOR.
References
Irisbus Cristalis Wikipedia(Text) CC BY-SA