This swim parka is a value version of more expensive brands, which is good. ***
For me, the shorter fleece lining is better than the longer fleece lining. Both are warm but the shorter fleece is more confortable and less thick. ***
The size chart is accurate. Use your normal size for a coat, or go up one size for a changing robe. My normal size is medium but I chose a large to have extra room. Perhaps a medium would work as a changing robe but I will keep the large. Also, the large is a bit longer. It goes down to my knees. ***
I do not use the zipper. I use the snaps instead because they are easier. Note, the snaps are not standard for the U.S.A. meaning you will probably not find replacements if needed. I would have given a rating of 5 stars if the manufacturer used standard snaps for their target customers. Perhaps the snaps are standard in China. If you must replace a snap, you will need to replace both sides so the snap will work properly. I also considered adding a second row of male snaps to make it fit tighter like a size medium. It would then fit as both a changing robe and a coat, but this is not possible with the factory female snaps from China. Oh well, I still give it 4 stars because it works well. ***