The Orca ORCCH27 27oz tumblr cups are designed to do only 2 things, keep hot drinks hot, and cold drinks cold. The Orca ORCCH27 27oz Tumblr cups are double walled and double vacuum sealed for ultimate insulation. Unlike other designs in insulated drink cups, the Orca ORCCH27 is perfectly capable of holding drinks to their desired temperature for long periods of time without the need for additional heating or refridgeration. The Double walled insulation of the Orca ORCCH27 tumblr cup is what keeps your drinks for so long, and the 27oz capacity will keep you from having to refill as often. The Orca ORCCH27 Tumblr cup is specifically designed to fit into standard size cup holders without needing a smaller overall size.