When I was a kid, I wore flip flops a lot in the summer. Last year, I bought a pair and they hurt between my toes, so I threw them out. This year, thought I'd try again--this time with Nike, and they're more expensive and have nice padding, too. But the thing that goes between my toes isn't the most comfortable (but not as bad as the pair I tried last year). I'm wondering if people who wear flip flops a lot build up some sort of callus/hard skin between their toes, so that it's not uncomfortable to wear them?