Brand New blue Sneakers Size 43

Brand new pair of Balenciaga sneakers. I had another pair of authentic Balenciaga sneakers size 39 (8.5-9) they were too narrow for my wide feet. I wanted to try a cheaper pair in a bigger size and accidentally got them too big size 43 (11.5-12). I am a true 9 so would need 40 or 41 in this style.