Looking for easy on rain boots for 1 year old

Katrina

Does anybody have any suggestions for rain boots that are easy to get on. My son is almost 1 and is a pretty solid walker now. He needs some waterproof boots that he can wear around the farm without worrying about them getting muddy or dirty.

However, he is still in that stage where he curls his toes when you try to put shoes on him so I need something that is fairly easy to get on. He currently wears a 4.5

Farm baby picture just for fun :)