I loved these booties for my daughter during the winter!  I couldn't get her to keep socks on, plus I felt like socks weren't quite warm enough.  She still pulled these off every once in a while, but they stayed on much better than socks.  Once she started trying to pull up, though, we had to stop using these.  They don't have any grip on the bottom so I didn't feel like they were safe for her when she was on her feet.  I would highly recommend these for younger babies, though!