The 12oz Alta Tumbler from Thermos® is a 18/8 BPA-free stainless steel vacuum insulated bottle designed for active lifestyles and everyday hydration. Keeps drinks cold for up to 10 hours. Keeps drinks hot for up to 3 hours. Durable construction built for daily use. BPA-free throughout. Specifications: 12oz capacity | 18/8 BPA-free stainless steel | BPA-free | Keeps cold 10 hours | Keeps hot 3 hours Shop all Thermos® drinkware or view best sellers .