Note, $ 7.99 each if you buy 6 or more.

The wave collection of high performance drinkware from Vandor features a double-walled design with Vacuum insulation technology to provide a superior experience with your favorite beverages. You’ll enjoy hot beverages that stay hot 4+ hours, and cold beverages that can stay cold for up to 48 hours! making retro cool since 1957, legends live on at Vandor – suppliers of hip and functional products for fans of all ages.