Danger ranking: 2. "They feel wonderful for four to five hours of sitting or standing," says Hillary Brenner, DPM, a podiatric surgeon in New York. "But walking in these can put pressure on the ankles, knees and hips. Even though they have arch support, they don't have enough for long journeys."
Best for: Camp counseling; pointing out constellations in the night sky
Doctor's note: "Break them in by wearing them around your home so you know how they feel before you wear them outside."