Adidas trainer sizing?

[MadameSapphire]

Looking at Sambas and Spezial, but haven’t bought Adidas for years. I’m a 4 in Superga and 4.5 in Nike trainers. Any advice please, Adidas lovers? TIA. 😊

I go up one size as feel their sizes run small.

My spezial are true to size, I am a 5 and a 5 fits perfectly.

4.5 in nike 4.5 in Adidas imo