I've worn them to lots of things including class. I go to people houses for my job all day. I've often worn crinkly diapers under my khakis and I don't think anyone's every noticed. I do however tuck my shirt in, wear and wear a tight belt. Most of the time we're outside and you really don't hear little crinkles over natural sounds. The one time I heard it kind of loud, I pulled a plastic baggy out of my packet with some of the pieces I needed for my job and let them make the connection.