Construction: Double-wall vacuum insulation
* Capacity: Common sizes include 500 ml, 750 ml, and 1,000 ml
* Temperature retention:
* Hot: Up to 24 to 48 hours
* Cold: Up to 48 hours
* Leak-proof: Yes, with a sealed screw-on lid
* BPA-free: Yes, for the plastic lid components
* Uses: Coffee, tea, water, juice, and other beverages
* Suitable for: Office, school, travel, hiking, camping, and daily commuting