I ordered a uk 10 for my husband who’s had a similar Adidas shoe in the past and it came up small. So I used the Exhange option to change to 1/2 size bigger and the return got lost in transit. By the time I reordered the bigger size the. It was no longer in the sale. Customer services did kindly give me a gift voucher to cover the difference. However my husband really needed the shoes for a new Job and he wore them to the day before he realised they were also a bit small. It seems the sizing is not standard… Shame as we have a pair of shoes he can’t wear and he’ll have to buy another pair.