anyone have Rider sandals?

[chicago]

My cousin who is a triathlete had these on today and he loves them. I see a cool looking pair for women, but am wondering how true to size their sizes are. I am normally a 7 to 7.5 shoe... but wondering if anyone has these sandals, how true to size they are...

Interested in the 'relay' sandal to be exact...

here is the link...

https://www.ridersandals.com/shoponline_prod/men/casual/relay_iii