Stainless Steel Double Wall Vacuum Mug /Thermos Mug

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Stainless Steel Double Wall Insulated Vacuum Mug

Double-Wall Construction: The mug has two layers of stainless steel with a space between them.
Vacuum Insulation: Air is removed from the space between the two walls to create a vacuum. Since heat transfer via convection cannot occur in a vacuum, this drastically slows down the rate at which heat moves between the inside of the mug and the outside environment, keeping hot drinks hot and cold drinks cold.
Temperature Retention: This technology allows beverages to retain their intended temperature for an extended duration (often 6-12 hours for hot liquids and up to 24 hours for cold).
No Sweating/Condensation: The outer wall stays near room temperature regardless of the contents' temperature, preventing condensation from forming on the exterior and ensuring the mug is comfortable to hold and won't leave water rings on surfaces.
Durable Materials: High-quality mugs are typically made from food-grade 18/8 or 304 stainless steel, which is rust-proof, resistant to stains and odors, and built to withstand daily use.
Leak-Proof Lids: Many models come with secure, leak-proof lids (e.g., screw-top or auto-seal mechanisms) making them suitable for travel and preventing spills.
BPA-Free: All plastic parts, including lids and seals, are generally BPA and phthalate-free to ensure health and hygiene safety.