12 oz Sippy Cup

12 oz. Sippy tumbler with silicone insert to make spill proff.  feature double-wall, vacuum insulation with a clear lid. They are 2X heat and cold resistant compared to glass or plastic wine glasses. These wine tumblers are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also know as Type 304 Food Grade.