Salt-Water sandals are always a popular choice at Groovy2Shoes.
Sun-San are the little sister brand to Salt-Water. They feature a comfortable spongy urethane sole with rust proof buckles. They can be worn in water and hand washed with a gentle detergent. The sweetheart is a pretty sandal with scalloped edges with adjustable buckles on the ankle and toe strap.
Fitting advice: very versatile to fit but will fit a slimmer foot due to the adjustable buckle fastenings.