Manufacturer's Part Number: #YRAM30BK
Yeti over-engineered their Rambler Tumblers to keep your beverage from losing its frosty or piping hot goodness, before you can enjoy it. Made with kitchen-grade 18/8 stainless steel and double-wall vacuum insulation. Rambler Tumblers keep ice 2X longer than plastic than plastic tumblers and are designed for maximum ice retention, and work just as well for hot beverages. Rambler Tumblers are BPA free, including the crystal clear lid.