I've been using these for my bike commute throughout winter in the Boston region (i.e. temps down to 20F). Cold hands have been the biggest problem for me biking in winter, so I've tried maybe a half dozen different gloves. These have been okay, as good or better than any other winter biking gloves I've tried (excluding mittens). Still, my hands do get cold in temps below freezing, so these are certainly not a magic bullet in terms of keeping your hands warm while biking. That said, people experience cold differently so your results may vary.