The Hydro Flask 21oz Standard Mouth Bottle is perfect for both trail adventures and office days. This versatile double-walled vacuum flask keeps beverages hot or cold for hours, whether you’re enjoying a hot coffee or ice-cold water. Its compact size fits comfortably in car cup holders, making it ideal for long drives or daily commutes. The bottle accommodates ice cubes, ensuring your drinks stay chilled, and comes in a range of vibrant powder-coated colors to match your personal style. Stay refreshed and stylish with the Hydro Flask 21oz Standard Mouth Bottle, designed for both functionality and flair. Hydro Flask 21oz Standard Mouth Features: Double Wall Vacuum Insulation Keeps Drinks Cold For up to 24 Hours Keeps Drinks Hot For up to 6 Hours 18/8 Pro-Grade Stainless Steel BPA-Free Proprietary Powder Coat Lifetime Warranty 21oz/596ml Compatible with Standard Mouth Insulated Sport Cap