Take along your favorite hot beverage or cold beverage. For easy refilling at any time, the lid features a wide mouth that is froth-friendly. The luxurious Vortex Calix is constructed from premium 18/8 stainless steel (BPA-free). The double-wall Coppertech© vacuum insulation technology can retain iced drinks’ temperature for up to 17 hours and hot drinks for up to 1 hour. Vortex Calix fits in most cup holders and is the perfect companion for on the go. Every piece of this stainless steel flask is dishwasher safe.