Beachwear man green ipanema lining: flexpand rubber insole: flexpand rubber reference size: 41 fit: regular ipanema dark green men's slippers 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.