I'm short (158cm) with 41cm calves and size 3 feet. I ordered size 4 half wellies because there is no such thing as size 3, wide calf wellies in this universe.
Being so short the boots cut off at the widest part of my calves. Basically, on me they are full length wellies, so I was worried that Jileon thought the lower cut off would be enough and they would still be too narrow for me (Jileon, this is why half wellies still need the calf width measurements on your webpage).
I took a chance and it paid off. There is plenty of room for my calves.
Unfortunately for me, there is also plenty of room for my feet, because the shoe is also very wide. It's a big 4. As in, have to shuffle to not step out of them.
But weird legged beggars can't be choosers. At least I can get my legs into these and since there is spare room in the shaft as well I can use welly socks for the cold, wet season. (To be fair, that's a good ten months here.)
I'm happy enough with the product. (I'm just salty because apparently once again I'm just too deformed for retail.)
And if you have wide size 4s, these will be excellent for you.