Travel Mug ZOJIRUSHI STT 20 320 ml red — insulated stainless steel tumbler

The ZOJIRUSHI STT 20 travel mug is a 320 ml insulated stainless steel tumbler in red, designed to keep hot and cold beverages at stable temperatures while you are commuting, travelling or working. Its compact shape and spill-resistant lid make it suitable for everyday use; the mug is sized to fit most vehicle cup holders and short-term storage in bags. The stainless steel construction and thermal insulation are intended to combine durability with portable temperature retention for single-serve drinks.

Advantages

The double-walled stainless steel body provides thermal insulation that slows heat transfer, helping to keep drinks warm or cold for extended periods compared with a non-insulated cup. The spill-resistant lid reduces the likelihood of accidental leaks when the mug is carried in a bag or placed in a cup holder. The compact 320 ml capacity balances portability and serving size, offering enough volume for a standard coffee or tea while remaining lightweight and easy to handle. The red finish is easy to identify among other items and resists stains from common beverages.

Suitable for

• Commuting and public transport
• Short business trips and travel
• Daily office or home use
• Outdoor activities where a compact insulated cup is needed

Key specifications

• Capacity: 320 ml
• Material: stainless steel body with thermal insulation
• Type: insulated travel tumbler with spill-resistant lid
• Finish: red exterior
• Form factor: compact design to fit most cup holders

How to use

Fill the mug with a hot or cold beverage up to the recommended fill line if provided, then secure the lid to reduce spills and retain temperature. When pouring hot liquids, handle the mug carefully and allow pressure to settle before opening any drinking mechanism. Clean the lid and interior after each use according to the manufacturer's care instructions to maintain hygiene and thermal performance. Avoid placing the mug in a microwave; stainless steel construction requires hand or dishwasher-safe cleaning only if indicated by the manufacturer.

Usage recommendations

To prolong thermal performance and maintain appearance, pre-warm or pre-chill the mug by rinsing with hot or cold water before filling. Tighten the lid securely for transport and avoid dropping or striking the stainless steel body to prevent dents that can affect insulation. Follow care labeling for dishwasher compatibility if available; when hand washing, use mild detergent and a soft brush to clean the interior and lid components.