LEAKPROOF & NON-SLIP DESIGN: The coffee mug lid comes with an airtight silicone seal that prevents the drinks from spilling. With a sip hole for easy drinking. The insulated coffee mug has a matte material, it makes the coffee cup easy to grip, gently fits into your hand. Silicone base to keep the cup stable and not easy to slip. The coffee mug fits in most of the standard car cup holders, suitable for business or travel. HIGH QUALITY MATERIAL: The coffee travel mug is made of 304 stainless steel ineer walls, Vacuum double wall, taste free, lead free, rust-proof, keep cold or hot temperature, The Leak-Proof lid was made of food-grade silicone, BPA free. PORTABLE & EASY TO USE: Only three parts are involved - the lid, the insulated thermal travel mug, and the stainless steel pour over filter. The coffee mug fits in most of the standard car cup holder and coffee maker. The spill-proof flip lid is a simple, secure, and one-handed operation easily. PERFECT COMBINATION FOR COFFEE LOVERS: 510ml capacity with a beautiful shape bring a good sense. not only enjoy your coffee, but tea, wine, juice quite nicely at home, travel, office, camping, and many other occasions. It is also a perfect gift for Father's Day, Mother's Day, Birthday, and Christmas. The coffee mug fits in most of standard car cup holder. The coffee mug can reusable and easy to carry. Cut down to use the paper cup or plastic coffee mug, let us act to protect the environment. Vacuum Insulated Technology The vacuum insluated travel mug keeps hot/ iced beverage for hours, which is suitable for outdoor adventure, road trips, sports event, home, office, parties and fit most of vehicle cup holders. One-hand open and never springback Air vent on the mouth piece ,allows beverages to flow out smoothly, without gushing or overflowing. The cap can be opend and closed by one hand,easy to operate with one touch. Perfect gift: A perfect gift for your loved ones. It's an ideal solution for portable brewing a cup of coffee. Here are some tips for you: Please do not freeze or microwave. Hand wash the tumbler before first use and after each use. After pouring in boiling water, let it cool down without the lid for at least 3 minutes. Please leave some space at top of vessel for lid to avoid overflow.