My dad wears a size 12 so we weren't sure if we should go for a size 11.5-12 or 12.5-13. We ordered 11.5-12 and ended up sending them back. Got up the next size and fits perfectly!
Pros
The non-slip outsole provides excellent traction on a variety of surfaces
Cons
Shoes can cause discomfort or chafing when worn for long periods.