[b bright]

My 22 month twins have started doing this too! They can pull off Velcro. They can undo snaps. They can take off pants, shorts, pj's, sleepers, sleep sacks, etc. We put the sleep sacks on inside out and that stopped them for a while (they zip from top to bottom, but they figured out how to unzip them) so we switched to inside out and it worked for a while until they figured out they could crawl out of the neck hole!

We are at a loss now with the possible we exception of putting the sleep sack on backwards, but the neck might be uncomfy.