Tretorn aligns once again with the Newport Folk Festival, happening July 28-29 in Newport, RI (get a full line-up here). For 2012, they have released two Tretorn items special for the festival both branded with NFF inspired icons of the nautical and musical nature. The flip-flops are available now for purchase online while the galosh boot will be a NFF on-site exclusive.
Seeing as Newport is a beachy kinda place, you are safe to wear flip-flops.