1. Eco-Friendly Reusable - The Travel Coffee Mug with Vacuum insulation and stainless steel inner wall no burning fingers. Hold the mug without any discomfort and enjoy your coffee.2. 100% Leakproof - The silicone ring at the connection between the lid and the mug body can effectively prevent leakage and carry it safely in your bags with no worrying about the spills.3. Carry to GO Stylish look, practical cup - Even when held in your hand, the sense of fashion is multiplied. Gently fits into your hand with an Anti-Sweat design. The 14oz lightweight and compact feel make it easy to fit into most car cup holders.4. Keep cold / Keep hot -This insulation design ensures beverage can stay either hot or cold for long periods. Retain the temperature of your chosen beverage for a prolonged period of time when you choose Outdoor.