Proper hydration plays a key role in a healthy lifestyle and the 12-ounce FUNTAINER bottle from GENUINE THERMOS BRAND is a great product to fulfill any on-the-go hydration needs. Constructed with durable stainless steel and THERMOS vacuum insulation technology, this bottle keeps beverages cold for up to 12 hours. It features an integrated carry handle and hygienic push button lid with a pop-up straw that is easy to open and comfortable to drink from. Not for use with hot liquids.