At 64oz, the Portage Canteen is your ultimate adventure companion and will keep you hydrated where ever life takes you. Vacuum insulated engineered with pro-grade stainless steel, this large canteen will stay cold for over 12hours, and hot for up to 8. The extra-wide mouth is designed to fit ice cubes and allows for easy cleaning. BPA and toxin-free, reusable and refillable.