Easy, Convenient, Effective Kidsme Straw Cleaning Brush Set is designed to helpmake the task of cleaning the insides of straws easy, convenient, and effective. The rust-free stainless steel wire brush handle with a durable nylon bristle tip helps ensurethorough cleaning. The set includes a replacement silicone straw as well. Specifications Materials for brush: Stainless steel, wire, nylon. Material for straw: Silicone BPA-free, phthalate free, lead free.