Light grey knit slip-ons are unisex, men’s 10.5 or women’s 12-12.5. Euro size 43.5. To me these fit like a 12.5. I bought these new and wore them around for a day before deciding they were too big in the heel. Excellent used condition. The knit upper is a little stretchy and very comfortable. Nice padding around the ankle and cork insoles with arch support. Durable sole. A great casual shoe for summer adventures!