Black insulated vacuum flask

This flask has a 500 ml capacity and features double-wall insulation for temperature retention. It includes a built-in thermometer display on the lid that shows the drink's temperature when touched, and a stainless steel infuser. 

The flask is made from high-quality 18/8 stainless steel for the interior and features a multi-layer spray paint and baking paint process on the exterior for a comfortable, non-slip, and scratch-resistant finish. 

It has a screw-on closing mechanism, a lid that can also be used as a cup, and a carrying handle for portability. 

The vacuum insulation allows it to maintain the temperature of hot beverages (above 40°C) for an extended period, reportedly up to 13 hours for hot drinks.