Made of 100 % linen and 100 % terry cotton. Foam inside. Outside filled with natural Baltic Sea amber covered with fine nylon. Used for washing and massaging your body. Rejuvenates tired feet when rubbed well. Massage with amber improves blood circulation and strengthens immune system. Can be used by children and for babies. After using, wash the sponge under running water and leave it to dry. Specifications: S diameter 14cm, weight 50gr, M 20 x 14 cm, weight 78gr, L 75 x 10 cm, weight 115gr.