I understand/remember not wanting to get changed in an open area as a youngster. Even now the change rooms at pools and gyms give me the heebie jeebies.
These robes are great. They are a towel that you can get changed under discretely. They were originally designed for/by surfers to get in and out of wetsuits at the beach, so plenty of coverage for drying off and changing with privacy. Much better coverage than a normal hooded towel.
If it's not ok to post a link, just google "robie robes". They have a web page.