I have a pair of ASICS Gel Kayano 5 in US 9.5 / Euro 43.5 and they have plenty of room, so I initially ordered a size US 10 as many have recommended sizing up for ASICS wrestling boots. I had to return them because they were so tight. Re-ordered, this time in a US 10.5 and looking at the tongue it is Euro 43.5. These do fit well.As always this brand of shoe fits my daughter perfectly! With winter sports in New York State delayed she is super excited to get threse new shoes on the Mat!Bought these for my brothers upcoming season. You can never go wrong when going with asics wrestling shoes. These are great shoes for beginners and advance wrestlers and they fit true to size would recommend.Normalmente compro 8.5 pero estás zapatillas son angostas, así que las ordené en 9.5 y me quedaron bien. Se sienten de buena calidad.As expectedThey fit goodBought for my teen boys. They liked them and the fit was as expected.