These very stylish women's pool side slides were created by the famous Paris design house of LOUIS VUITTON and manufactured in Italy. They are marked a size 40, which is the same as a US Size 9-1/2.  The strap across the top of the foot looks "quilted" and is adjustable because it opens and closes with "hook and loop" tape.  These shoes are pre-owned but barely worn. They are in very, very good condition with no damage.  The insole measures 10-1/4" long x 3-1/2" wide.  Please use measurements when determining fit. I do not guarantee anything stated on the internet regarding the size conversion.  NO RETURNS.  Unfortunately, I cannot accept returns on these shoes as too many people buy nice things to wear to a function and then return them.  I cannot operate as a "lending library."  I have bills to pay just like everyone else.