Thermosphere of Taste: How Vacuum Insulated Mugs Keep Your Coffee Warm Thermos vacuum insulated coffee mugs are built to withstand the demands of daily use. These mugs are typically constructed from durable materials like stainless steel, which is known for its strength and resistance to corrosion. Stainless steel is not only long-lasting but also resistant to stains, odors, and rust, ensuring that the mug remains in excellent condition even after years of...