I love these Crystal H's but know as I've had a pair before to buy 2/3 ( 35/36) when I'm actually a 4 (37). Different types of H's come up different sizes as the non crystal slim are about the right size! Think they need to adjust their sizing but awesome flip flops!!
Looking for seamless socks for my daughter who is an adult size 6 is tricky but I felt these weren't great quality. One of the socks had a large hole in the toe area and she says they are generally uncomfortable :-(.