They are warm and Ive done a quick trip outside without wearing socks. The straps are a little on the looser side, so not good for super skinny feet. I could not be more happier with these headphones, and they easily handle the wear and tear I put on them by using them so much, and by taking them to the beach so much. 10 climbing shoes have the same issue: heel never fits, and there is an empty space in it. I thought the retractable buds would be a problem but they are super light and sturdy. These fit my Bose QC 2 VERY well. Having a Cinderella size 5 - 5. undernerh of the metal buckle other than that it fits good and looks really nice Had to return it, for a hard shell case. I definitely recommend others to give this waist trainer a try!