Narrow width, but sizing half size up as suggested by Amazon avoided having to make an exchange. This is my second pair of ASICS for indoor court sports - my first was a men's shoe because I was afraid the women's sizes would be too narrow. The sole is great - no slipping, very sure-footed, even when weather outside makes court surface a little wet. The interior cushioning is great on sole, sides of foot, and heel. Well-ventilated.