Naot Kayla sandals are my main summer shoes.  I got my first pair about 5 years ago when I was looking for a sandal with good arch support after a bout with plantar fasciitis, and the minute I put a pair of Kaylas on I knew I would be wearing them a lot.  Since then I've bought 3 or 4 more pairs in various colors.  They are especially good for traveling.  I've done day after day of walking in them and never got a blister, never had my feet ache at the end of the day.  These sandals are fabulous.