OOFOS. 1401 BLKCAL. WOMENS OOLALA LUXE SANDAL. BLACK WITH CALYPSO. The OOlala Luxe sandal features revolutionary OOfoam technology that absorbs 37 percent more impact than traditional footwear foam materials to reduce the stress on your feet and joints. This technology aids in the recovery process and creates an incredibly comfortable sandal you can wear anywhere. This feminine silhouette has slightly narrow footbed compared to the OOriginal which compliments every outfit day or night. Our Luxe treatment features hand-painted details that are unique to this OOlala style.