750ml Old School Double walled insulated flask with airtight screw top seal makes the perfect outdoor accessory. Double wall insulation maintains the temperature inside regardless of your surrounding temperature. Keeps drinks cold for up to 24 hours and hot up to 12 hours. The airtight seal and lid are both BPA-free and safe to reuse for years.
The double-layered design eliminates condensation and water build up on the exterior. The innovative lightweight design is easy to handle featuring a narrow mouth for easier drinking and thin enough to fit into most cup holders and backpack side making it the perfect travel companion.