Purchased these impulsively from Gucci in the summer of 2023, and are far too tight for me to wear, despite sizing up. If you are true 38.5, these will be too small. I recommend these for a narrow 38, or even someone who is a 37.5. These are brand new and never worn. I have the receipt, dust bags, and original packaging and shopping bag that I can include. I’m losing money on this deal, but it’s a waste to keep in my closet!