Brew Infusion Double Wall Tumbler 82x100mm, 220ml Set of 12BREW: This is the brand name or product line associated with coffee related items, including tumblers, mugs, or other accessories. INFUSION DOUBLE WALL TUMBLER: This specifies the type of tumbler. The "double wall" construction indicates that the tumbler has two walls with a space in between, providing insulation to keep drinks hot or cold for longer periods. 82x100mm: This indicates the dimensions of the tumbler. The tumbler measures 82 millimeters