Thermos FUNtainerStainless Steel10 oz Leak-Proof Straw Bottle- Cars Silicone, Stainless Steel, Polypropylene Double wall vacuum insulation keeps beverages cold and fresh for up to 10 hours; exterior stays condensation free BPA-free stainless steel interior and exterior inhibits bacteria growth Push-button lid is leak-proof and hygienic, soft silicone straw is durable and easy to sip 10 oz capacity, hand wash/top shelf dishwasher safe