20% net profits from your black Bangs are invested with their partner, Springboard Collaborative. Springboard Collaborative combines targeted student instruction with parent training in an incentivized system that closes the literacy gap in the US. BANGS are made of a canvas upper, rubber outsole, and a canvas interior. BANGS run about a half-size big. Depending on whether or not you wear big socks, we recommend ordering a half-size down from your normal size.