I bought one of these when my Furygan leather jacket died.
https://www.sportsbikeshop.co.uk/mot...nt_prod/252248
I'm very pleased with it not only in the heat, but it's been pretty good when it was freezing cold and ****ing down. Which is good news as it's my only jacket. I was impressed with the quality too, I'd never had an RST clothing item before and had read good and bad things about them - it met all of my expectations.
Oh and it was fairly cheap - like me.
I even left a review.