16 oz Tumbler withTempShield™ insulation keeps cold drinks cold for up to 24 hours and hot drinks hot for up to 6 hours. Narrow design is easy to hold and fits into most cupholders. Insulated press-in lid, so you can take your beverage anywhere, features Honeycomb Insulation™ for additional temperature control Durable 18/8 Pro-Grade Stainless Steel construction BPA-Free and Phthalate-Free