Sized up 1/2 size for a perfect fit. This is one of the lighter soles that Keen makes. It is a supportive,well made and adjustable sandal. The protective toe guard is the smaller version that Keen makes. I think of this one as sort of the around town uniform surface walking sandal. A ventilated sports shoe. Comfortable right out of the box. The heel strap is a bit of a pull to get on. Once you get used to it it is not so much of a challenge as a comfortable strap that keeps your sandals on in the water and other situations that might want to suck them off your feet. I have wide feet with a high instep and a medium arch. These work well for me.