Borosil Trek Black Flask

• Keeps your drink hot for 20 hrs and cold for 24 hours
  
• Insulated double wall vacuum with copper coating for maximum temperature retention
• 100% food grade stainless steel
• Leak Proof
• Condensation-free exterior so your hands and bag stay dry
• Cool to touch body with hot liquids and sweatproof with cold liquids
• BPA and Phthalate free - all plastic parts are food grade
• Non-leaching and toxin-free for healthy drinking
• Mouth wide enough for ice cubes and drip-free sipping
• Fits standard size cup holder
• Sleek and thoughtful design makes it easy to carry inside pockets of backpacks or bags

Capacity: 500ml, 700ml, 850ml