I bought the gray/navy Croc in size 4/5 toddler for my one year old and thankfully!!!!! it was the perfect fit for him.
It's difficult to buy shoes online for growing feet but these fit him great with room to spare. Hopefully he won't need another pair until at least the end of summer.
Crocs is my go to shoe for both my boys because they're easy to slip on and off, are comfortable, breathable, water proof, and easy to clean. No need to throw in the washer- just soap and water on a paper towel or use a hose ;)
I love that they're affordable and have such a variety of colors and styles.