AsicsGel-kayano 29 Men's sneaker

I ordered a 6 as I would take 6 1/2 ladies (I was advised to get men’s by my physio).They arrived and were too small. I returned (difficult as I’m disabled) and ordered 6 1/2. They’re virtually the same size. I daren’t try again as I’m sure a man’s 7 should be far too big.