BPA-free acrylic and double-wall insulated. It features a twist-on lid with silicone seal and bend-proof straw. 16-oz. tumbler. Safe for hot and cold drinks (not for microwave). Hand wash.****Features:*** 16-oz. tumbler. *** BPA-free acrylic and double-wall insulated. *** Features a twist-on lid with silicone seal and bend-proof straw. *** Hand wash. *** Safe for hot and cold drinks (not for microwave). **