Milwaukee Packout Tumbler 591ml RedA durable and convenient tumbler designed for professionals to keep beverages hot or cold throughout the workday. It features double wall vacuum insulation for excellent temperature retention and is made from robust 18 8 stainless steel for lasting durability. The tumbler includes a rotating magnetic closure for easy opening and a smooth sliding lid that can be operated with gloved hands, keeping dirt and debris away. It employs a twist and lock