High Quality 1, Made of 304 stainless steel, is more durable than glasses and unbreakable. 2, BPA Free, Lead Free, kids and adults can use it with peace of mind. 3, Powder coated exterior provides additional texture and durability. Humanization Design 1, Double-wall vacuum insulation design, can protect against heat or cold transfer, and keep your drinks be hot or cold for longer time. When filled with hot water, the cups will never get hot to touch! 2, Screw lid, along with the silicone seal ring can avoid water leakage. Splash-proof flip-lid is for convenient drinking, just one hand can open and close the sip hole. 3, Silicone sleeve on the mug body offers a comfortable way to hold, while the bottom rubber can avoid slip. 4, Good ability of insulation and suitable size makes it a good choice for traveling, office, car and other places. 5, Looks fantastic with beautiful color and delicate design, it is a wonderful gift for your friends, family members and so on. Kindly Reminder: 1, Here is sip hole on the lid, please do not invert the cup before tightly secured the lid and latch to avoid pouring! 2, When full filled with hot drinks, please cover the cap and keep the cup out of reach of children! 3, Please DO NOT SHAKING when dressed up hot liquid! 4, Do not put the cup in the microwave for heating! 5, It is better washing the cup by hand with sponge cloth or sponge ball in warm water! Specifications: Capacity: 510ml Color: blue Cup material: 304 stainless steel Lid material: ABS, BPA-Free Package: 1xCoffee cup