This is a Dandat 4-piece insulated stainless steel bento box set with a thermal bag.
The containers are made of food-grade 304 stainless steel and PP material, which are safe for microwave heating (without the lid).
They feature double-walled insulation to maintain food temperature for 4-6 hours.
The set is stackable and designed with silicone rings and ventilation holes to be leak-proof and prevent air pressure build-up.
The exterior is stain-resistant and easy to wipe clean.