DOUBLE-LAYER VACUUM INSULATION: Constructed with double-layer technology, there is no air between the inner wall of the travel mug and the outer casing. Our vacuum-insulated travel mug maximizes heat transfer. The airtight stainless steel insulated mug guarantees 4 hours of heat for hot drinks. There will be no condensation on the outside, and it won't overheat. Ideal for keeping your coffee hot or iced all day long. LEAKPROOF AND NON-SLIP DESIGN: The travel coffee mug comes with a leak-proof lid with an airtight silicone seal. Open the sleeve opening for easy drinking and lock it securely to prevent accidental leaks. The silicone cover design on top provides a non-slip grip when holding this insulated coffee mug. The non-slip design on the bottom allows you to place it on the table without worrying about it tipping over. HIGH-QUALITY, SAFE MATERIALS: This double-walled, vacuum-insulated stainless steel mug features a shatterproof 304 stainless steel interior and a non-slip, fingerprint-resistant matte finish exterior, keeping your drinks odor-free. FUNCTIONAL COFFEE MUG: We've designed an adjustable handle on the top of the mug so you can take it anywhere. It's the ultimate portable travel mug for your on-the-go needs. You can enjoy your coffee, tea, wine, or juice perfectly, ideal for both indoor and outdoor use. The beautifully shaped thermal espresso mug has a narrow base to fit all standard car cup holders, the perfect size for coffee lovers. PERFECT GIFT: Creating aesthetically pleasing products is our passion. Our small coffee mugs have a unique style and simple elegance. The beautiful stainless steel thermos coffee mug is carefully coated with a matte powder, ideal for business gifts and family presents. For important occasions like birthdays, anniversaries, or Christmas, choose our insulated tea mugs as a gift for someone special; you're sure to receive their appreciation.