Thermos Hydro Flask Hot Flask Cup 858 ml TRILLIUM — insulated stainless steel drink container

Hydro Flask Hot Flask Cup 858 ml TRILLIUM is an insulated stainless steel drink container designed to maintain beverage temperature during long outings, travel, work or home use. Its 858 ml capacity accommodates large servings of coffee, tea or cold drinks, while double-wall vacuum insulation reduces heat transfer to keep contents hot or cold for extended periods. The exterior is durable and shaped for everyday portability, and the design supports straightforward filling and pouring.

Advantages

The double-wall vacuum insulation minimizes temperature loss and prevents exterior condensation when carrying cold drinks. Made from stainless steel, the flask offers corrosion resistance and an easy-to-clean interior. Its 858 ml volume reduces the need for frequent refills and suits portion sizes for multi-hour use. The exterior finish resists scratches and is compatible with standard cup holders and backpack pockets for convenient transport.

Suitable for

• Long commutes and road trips
• Outdoor activities such as hiking or camping
• Office use and shift work
• Home use when serving large portions or keeping drinks at serving temperature

Key specifications

• Capacity: 858 ml
• Material: stainless steel construction
• Insulation: double-wall vacuum insulation
• Finish: durable exterior resistant to everyday wear
• Suitable for hot and cold beverages

How to use

Fill the Hydro Flask Hot Flask Cup with the desired beverage, leaving some headspace to allow for temperature expansion. Close the lid securely to engage the insulated seal and carry the flask upright to minimize spillage. For hot liquids, confirm the lid is fully tightened before transport. To pour, open the lid and tip the flask slowly to control flow. After use, rinse or hand wash following manufacturer cleaning guidance to preserve the insulation performance and exterior finish.

Usage recommendations

Pre-warming with hot water or pre-chilling with cold water for a few minutes before filling can help extend temperature retention. Avoid using abrasive cleaners or metal utensils inside the container to protect the interior surface. Inspect seals periodically and replace if damaged to maintain thermal performance and leak resistance.