the Daydays 3.2L Stainless Steel Vacuum Flask Storage Bottle in silver. It is a large, double-walled, insulated bottle designed to keep drinks hot or cold for extended periods. Here are some of its features:

• Stainless steel construction: The bottle is made of durable, BPA-free stainless steel that is resistant to rust and staining.
• Double-walled insulation: The vacuum insulation between the walls helps to keep drinks hot or cold for up to 24 hours for hot beverages and 48 hours for cold beverages