Exclusive Personalized 220ml Stainless Steel SS316 grade Vacuum Thermal Double Wall Thermos Flask Laser Engraved for Personal Use Car Outdoor Study Library Office School Couple Gift

Material: Stainle

A portable vacuum flask (or thermos) is a durable, double-walled container, typically made of stainless steel, designed to maintain beverage temperatures (hot/cold) for 6–24 hours. Using a vacuum-sealed space to eliminate heat transfer, these, often BPA-free, flasks are essential for travel, camping, and daily commuting.

Key Features and Description

• Insulation Technology: Features double-wall construction with a near-vacuum space between the walls, which minimizes heat transfer through conduction and convection.
• Material: Usually made of durable, rustproof, and eco-friendly stainless steel, with some inner linings using glass.
• Temperature Retention: Keeps liquids steaming hot or iced cold for extended periods, typically 12–24 hours.
• Design & Portability: Lightweight and designed for on-the-go use, often featuring a sleek, minimalist, or slim shape.
• Lid Functionality: Many models feature a leak-proof lid that doubles as a drinking cup, along with, at times, a carry strap.
• Capacity: Sizes vary widely, with popular, compact, and portable options ranging from 180ml to 500ml.

Common Applications
These flasks are perfect for storing coffee, tea, or cold drinks for school, work, camping, or hiking.