From the product description, check product page for current description, price and availability:

• INSULATED GROWLERS: 64oz Vacuum Insulated Growler keeps your favorite drinks carbonated and and at perfect temperature; FIFTY/FIFTY’s steel bottles are usable for hot and cold beverages; for outdoor activities or simply keeping around the house
• 64 OUNCE: FIFTY/FIFTY’s steel growlers are ideal for getting a beer fill from your local brewery holding the industry standard 64oz; bottles are vacuum insulated, with double wall construction, keeping beer cold for hours, and preventing condensation
• STAINLESS STEEL: Prevents retention of taste and odor, and is safe for all kinds of beverages ranging from water to carbonated sodas, beers, wines and coffee; unlike plastic growlers and plastic water bottles, ours is non-leaching, and requires no liner
• HOT BOTTLE / COLD BOTTLE: Custom designed 3 finger grip lid with vacuum insulation allows our growlers and bottles keeps cold drinks cold during the summer and your hot drinks hot during the winter! 3 finger lid prevents leaks due to superior seal
• SAFETY: Undergoing rigorous safety testing and using the highest quality, food grade 18/8 stainless steel, you can rest assured regardless of what you are using our metal growler for that your beverages are safe for consuming