Has anyone used one of these? My sister-in-law is constantly sending us pictures of our nephew in this adorable jumper-type coverall. I finally asked her what it was and she sent me the link. It's holy-cow-expensive, but look how cute it is!!!!

http://www.amazon.com/Merino-Kids-Natural-Babies-Toddlers/dp/B005OU5QEG

Has anyone used one of these? What did you think?