Due to the Nuk Silicone Soothers jaw friendly shape, the silicone baglet helps to train lips, muscles, tongue and jaw. The integrated circulation channel prevents saliva from gathering underneath the soother and thus avoids reddening or skin irritation. Silicone is flexible, transparent material, temperature resistant and has no taste. It is free from chemicals, can be boiled, is odourless, transparent and has a smooth surface. Average life of a silicone teat or soother is 1 to 2 months.