i'm not sure when it changed but at some point DS went from taking them off to insisting he always be wearing shoes & socks. he's 2 & almost 9 months now but this started last year sometime. i know for sure it was before the warmer weather because he has insisted on wearing jeans, shoes & socks pretty much all summer, no matter how warm i used to buy the socks (think they're bonds) that have the elastic bit in the middle that supposedly makes them more difficult to get off. it worked a little but not THAT well.