classic insulated thermos bottle

A thermos is a vacuum-insulated container designed to maintain the temperature of liquids for extended periods. Also known as a vacuum flask or insulated bottle, it's an essential item for keeping beverages hot or cold.

Key features:

• Double-wall vacuum insulation technology
• Stainless steel or glass inner chamber
• Leak-proof screw-on cap or lid
• Durable outer shell (usually stainless steel or plastic)
• Various sizes from 350ml to 1.5 liters

How it works:

• Vacuum between inner and outer walls prevents heat transfer
• Reflective surfaces minimize radiation heat loss
• Tight seal prevents convection

Common uses:

• Keeping tea, coffee, or hot beverages warm for 6-12 hours
• Maintaining cold drinks chilled for 12-24 hours
• Outdoor activities, travel, office use
• Camping, hiking, and sports

Benefits:

• Temperature retention for hours
• Eco-friendly alternative to disposable cups
• Cost-effective for daily beverage consumption
• Durable and long-lasting
• Portable and convenient

Popular types:

• Travel mugs with handles
• Wide-mouth bottles for soups
• Slim designs for car cup holders
• Premium models with advanced insulation