About this item Advanced Technology & Leak-proof: DLOCCOLD Coffee Mug is made of food-grade 304 stainless steel, which is corrosion-resistant, anti-rust, BPA-free, and eco-friendly. The cup wall is a double-layered vacuum, so it can effectively keep the drink warm or cold for 6-12 hours.The screw lid is leak-proof, easy to sip from and fits straws.Perfect for outdoor and inside home. Non-slip Silicone Design: DLOCCOLD Travel Coffee Mug has two non-slip silicone designs -- the non-slip pad under the mug bottom and the non-slip sleeve around the mug body. The non-slip pad at the mug bottom allows the cup to stand firmly on the table and not easy to tip over. The non-slip sleeve around the cup body allows you to take the cup to any place without the cup falling out of your hand. It is a good companion for your daily work, travel, outdoor sports, etc. Super Capacity: DLOCCOLD Travel Coffee Mug has a big capacity, 17oz, which allows coffee lovers to enjoy coffee in their daily lives. When going out, traveling, cycling, working, studying, hiking, or other situations, a full glass of drink can be used for a long time without refilling water multiple times. It is the best choice of mug for you are going out or at home. Bring You Easy Life: The non-slip sleeve on the mug body is detachable, and the diameter of the mug mouth has reached 3.5", which makes the mug very easy to clean. DLOCCOLD Insulated coffee mug is very light and perfectly fits the car cup holder. Therefore, you can take it to any place, home, company, school , shopping malls, amusement parks, etc. And it will not burden you. SATISFACTORY SERVICE：Risk-Free Purchase: If our product doesn’t meet your standards, for any reason, you are always welcome to contact us. We are proud of the quality of our coffee mug, and we know you’ll love it. That is why we back it with a 100% Money Back Guarantee to help you buy with confidence.