● Ultra-soft flexible silicon Each circle has a different textured pattern Children can feel the textures and discover the differences Linking the small and large sensory circles via touch is great fun with or without a blindfold On the floor, circles will grip and not slip even on a shiny surface After use, can be washed by hand or popped into a dishwasher set on a high temperature to clean them thoroughly without harm Set of 10 circular discs, 5 large (13-3/4 dia.) and 5 small (3-1/8 dia.)