Beachwear woman black ipanema lining: flexpand rubber insole: flexpand rubber reference size: 37 fit: regular ipanema women's black flip-flop sandals, decorated entirely with glitter and made entirely of flexpand, a 100% vegan recyclable material. Designed for the sea and comfortable for the shower, these shoes ensure grit and freshness even during the hottest days. Finally, they are finished with a thick flexible sole that guarantees softness and resistance for optimal comfort.