Insulated food jar Hydro Flask RF12001 354 ml Black

Hydro Flask RF12001 insulated food jar, 354 ml in black, is a vacuum-insulated stainless steel container designed to maintain the temperature of food and beverages. The compact 354 ml capacity and wide-mouth opening make it suitable for packed lunches, soups, stews or chilled snacks. The jar’s exterior finish and leak-resistant lid support daily commuting, outdoor activities and travel while helping preserve the temperature of the contents.

Advantages

The double-wall vacuum insulation reduces heat transfer to keep hot food hot and cold food cold for extended periods. Made from durable stainless steel, the jar resists dents and retains its appearance through regular use. The wide-mouth design simplifies filling, eating directly from the jar and thorough cleaning. A secure, leak-resistant lid offers confident transport in bags and backpacks.

Suitable for

• Packed lunches and single-portion meals
• Soups, stews and porridge
• Chilled snacks such as yogurt, fruit or salads
• Commuting, school, office, hiking and short trips

When it may not be suitable

The 354 ml capacity is appropriate for single portions but may be too small for large meals or when sharing. It is not intended for long-term storage of perishable foods beyond typical daily use; refrigerated storage is recommended for extended preservation prior to transfer into the jar.

Key specifications

• Capacity: 354 ml
• Material: stainless steel body with vacuum insulation
• Opening: wide-mouth for easy filling and cleaning
• Closure: leak-resistant screw lid
• Finish: black exterior
• Intended use: hot or cold food temperature retention

How to use

Preheat or precool the jar by filling it with hot or cold water for a few minutes, then empty before adding food to optimise temperature retention. Fill the jar without overpacking to ensure the lid seals properly. Close the lid securely before transporting. For best results with hot foods, serve soon after opening; for cold items, maintain refrigeration before filling and close the lid promptly.

What to consider before purchase

• Desired portion size — 354 ml is suited for single servings
• Need for leak resistance when carried in bags
• Cleaning method — wide mouth eases hand washing; check suitability for dishwashers if required
• Compatibility with intended foods (soups, solids, chilled items)

Usage recommendations

To extend temperature retention, precondition the jar with hot or cold water before filling and avoid frequent opening during use. Clean the wide-mouth opening and lid thoroughly after each use and allow parts to dry fully to prevent odour build-up. When transporting, place the jar upright inside an insulated lunch bag for additional temperature stability.