Lariana freestanding bathtub in Cristalplant® with siphon – Patricia Urquiola, 2015 Bathtub made of white Cristalplant®, exterior in marble. All versions have an overflow hole and no tap holes; the tap can be mounted on the wall or floor. The bathtub is equipped with a siphon with a cover in white Cristalplant® (.MET0725C), also suitable for display bathtubs.