Material: made from durable, food-grade stainless steel with double-wall vacuum insulation.
Features: They have leakproof lids, sometimes with a straw and handle, and are designed to fit in most car cup holders.
Temperature Retention: The insulation helps maintain drink temperature, keeping contents hot for several hours or cold for longer periods.
Usage: They are versatile for both indoor and outdoor use, suitable for coffee, water, and other beverages.