SPECIAL LID DESIGN – The unique slider lid easily opens or closes with one finger. This silicone O-Ring spill-proof sliding lids seals off completely, making it spill proof for easy transportation and helps maintain the temperature in the travel coffee mug. The lid of the mugs is a DISHWASHER SAFE and with DISASSEMBLE feature for easy cleaning. Replacement lid is available. DOUBLE WALLED VACUUM CUPS - For maximum temperature retention, keeping your favorite ice cool drinks, cold brew, iced coffee, hot chocolate, black coffee, latte, cappuccino, espresso, soup, tea, water, beer and more, chilled for the hot days, and warm for the cold. This large coffee travel mug is sweat proof and condensation-free. Recommended hand-wash to prolong the lifespan of the coffee cup. DURABLE PREMIUM QUALITY - The 16oz reusable coffee tumbler is made from Food Grade 304 Stainless Steel for both inner and outer layers. BPA toxic-free. Better than ceramic or glass. The coffee thermos are finished with a stylish matte powder coating design that lasts a lifetime - prevents scratching, peeling, or fading, top with an ergonomic handle for a comfy grip. Ideal for home, office, cafe, camping, traveling or other workplaces. WONDERFUL GIFT IDEA - This lightweight, simple, modern and stylish wine-glass shape stainless steel tumblers make it a perfect present choice for birthdays, valentines, anniversary, weddings, and Christmas for yourself, good friends, love ones, coffee lovers, professionals, or travelers. RISK-FREE SATISFACTION GUARANTEED - At GRANDTIES, we are committed to using high-quality materials and top craftsmanship for our coffee cups. Customer satisfaction, happiness, and safety are our top priorities. If you are not satisfied, we provide a refund or free exchange with every purchase, kindly leave a comment below and allow us to put a smile back on your face.