I have to admit, I wouldn’t have thought of this as a precautionary measure, but it makes a certain amount of sense:
I wasn’t sure which size to go for with these Valentino Rockstud City Sandals as I’m a 40 in the heels in patent leather, but I know with sandals you always need to size down if there’s an open back and an open toe. I ordered both the 39.5 and the 39 on my credit card and I kept the 39. The 39.5 did fit me, but there was too much gapping at the toe area and the straps weren’t as tight, so they were definitely too big. I recommend you size down if you are buying these as they need to fit securely and will probably stretch a bit from the heat during the hot months.
A 40 on the Continent is about a 9½ in the States, so she ended up with what we would call an 8½. (I’m not about to compare our “hot months” with theirs.)
And I did not know about downsizing for sandals. Maybe it’s something specific to women’s shoes; me, I tend to be grateful for anything that comes close to fitting.
There’s just one potential hangup with this procedure: these shoes were priced at £650 — $940 a pair. Charging two pairs might be beyond some people’s credit lines.