Nestco Warmable Stainless Steel Thermo Mug, a stainless steel mug with a microwave-safe inner cup, will be available from Subhiromori on September 24. The price is 2,350 yen (tax included).

Nestco Heatable Stainless Steel Thermo Mug

With the increasing demand for home time, this stainless steel mug is being chosen not only for daily use but also as a gift. Whenever we wanted to make soup or cocoa in the microwave, or when we returned from a meeting and wanted to reheat it, we had to put it in a microwavable cup and replace it with a stainless steel mug again once it was warmed up.

This time, we developed a stainless steel mug that comes with a microwave-safe inner cup. The body is made of stainless steel with a vacuum double-layer structure. Warm food can be drunk warm and cold food can be drunk cold.


The inner cup can be used in two ways: with or without the inner cup. The cup is microwave-safe, so cocoa or soup made in the microwave can be placed directly into the cup to maintain the temperature at which it is ready to drink. It is also perfect for reheating soup when it has cooled down.


Size: 11.5 cm (W) x 8.5 cm (D) x 11.7 cm (H) (capacity: 380 ml when inner cup is used, 400 ml when main body is used). The handle is large and easy for men to hold.

Available in beige, orange, mint, and black. The calm design is easy to use for all ages and genders. The logo COZIEST NEST means "comfortable nest.


Heat retention
Heat-retention efficiency: 74°C or higher (for 1 hour)
The temperature retention is defined as the temperature of the water when the inner cup is filled with boiling water to the bottom of the lid at room temperature of 20°C±2°C, the lid is closed, and the water is left at 95°C±1°C for one hour.

Cooling effect
Cold storage temperature: 6°C or lower (for 1 hour)
The cold holding capacity is the temperature of the water when the inner cup is filled with cold water to the bottom of the lid at a room temperature of 20°C ± 2°C, the lid is closed, and the water is left at a temperature of 4°C ± 1°C for one hour.