Waterproof and non-slip design: The matte texture and groove design of the mug body allow you to have anti-slip function when holding this insulated coffee mug. This coffee mug solves the problem that take-out coffee can only be held in your hand and cannot be held in the bag; It retains liquid heat for up to 8 hours above 38C and liquid cooling for up to 8 hours below 16C. Ideal for keeping your coffee hot or iced for the day. < p>Healthy and Leakproof The inner liner is made of 304 stainless steel and the outer case is made of high quality 201 stainless steel.EASY CLEANING: Use a brush for quick and easy cleaning. The rubber bands of the lid are easy to disassemble and install. (Please wash with soap and water before first use. Do not put in the washing machine.)PERFECT CAPACITY The ergonomic design ensures that the cup is comfortable in the hand. 500ml capacity is perfect for coffee, tea, wine, juice and beer.