Boots for hot weather.

Hi guys, at the moment I have Daytona Touring Star GTX. I am also completely satisfied with these boots. Only and only for high temperatures I would like to buy some airier boots, or those without membrane (=GTX). On the feet it is sometimes quite warm, on which the boxer motor contributes a not insignificant proportion. Maybe someone has experiences and can give me tips, here times my “conditions”: -Full-quality motorcycle boots with Protek doors -No “short shape” -Nothing with shoelaces -No membrane! -No racing supersport boots with any outside plastic ratchet / joints. Brand and price are first relative, I am ready to pay for good material also accordingly. Greeting, Carsten