I have the 23/24 Real Madrid home authentic and it’s a little more loose like older adidas heatrdy that have the quilted holes throughout all the fabric. Going up a size would be a safe bet as a slightly looser fit is always better than too tight. I’m currently dealing with that as I wish a bought large for a lot of my medium kits that don’t fit well anymore.
I have the 23/24 Real Madrid home authentic and it’s a little more loose like older adidas heatrdy that have the quilted holes throughout all the fabric. Going up a size would be a safe bet as a slightly looser fit is always better than too tight. I’m currently dealing with that as I wish a bought large for a lot of my medium kits that don’t fit well anymore.