my size is uk 11 and usa 11.5 eu45. sung boots come in size 10 or 11.

the size 10 safety was tight at the front foot. it seemed the composite toes guard kept squeezing my foot. so I ordered the normal size 10 and size 11. the size 11 was large and I was experiencing heel strike from the wellie. so I had to stick with size 10 non safety version. the size 10 non safety is still a bit tight at the front end of foot , however I think it will expand a bit over time and I am keeping it. the green version is safety and I ordered it in size 10.5 however it was large and same heel strike while walking. I think size 10 would have been fine for me. all sizes are in uk sizing as I am writing. the yellow coloured lined shoes aren't worth buying imo as they are quiet heavy . they sure have some solid steel for safety . my opinion is for people with disability or their carers and not for professional use . the red type snug boots from dunlop are nice looking and for everyday wear. you wouldn't seem out of place wearing them in to shops for grocery shopping or to the beach for people who don't like sand fleas . hope this helps you.