Kleine Wolke Java Plus PVC Free Tub Safety Mats (14.2x36.2, Capri Blue) Made from a natural elastic material Caoutchouc obtained from the latex sap of trees especially trees of the genera Hevea and Ficus. This is a non vinyl, non chlorine, non-phthalate based product. Very durable, heavy weight, natural rubber construction. PVC free non vinyl, non chlorine based product eco friendly natural rubber safety mat. Suction cups cover the entire back side for excellent non slip capability. Great suction on smooth surfaces. Machine washable in warm water with mild detergent. Easy care. Shake out and hang dry after each use to help resist mold and mildew.