Material: Food-grade 304 stainless steel inner liner
* Insulation: Double-wall vacuum insulation
* Capacity: Common sizes include 380 ml, 500 ml, and 750 ml (depending on the model)
* Temperature retention:
* Keeps drinks hot for about 6 to 12 hours
* Keeps drinks cold for about 12 to 24 hours
* Lid: Leak-resistant screw-on lid, with some models featuring a one-touch or flip-top drinking spout
* Exterior: Powder-coated or painted finish for improved grip
* BPA-free: Plastic components are typically BPA-free
* Uses: Suitable for coffee, tea, water, juice, and other beverages
* Portability: Fits most car cup holders and is ideal for commuting, travel, school, or office use.