PREMIUM GIFT - These funny engraved tumblers on the cup permanently is delicate. You may surprise any friend on Valentine's Day, Birthday, Christmas, Mothers Day, Fathers Day, any anniversary, retirement, or any special occasion gift.DURABLE QUALITY - All of these tumblers are made of high-quality stainless steel. Powder coating technology makes it for a long time and to have a modern and stylish look. The mug has a narrower bottom to fit most standard cup holders. It is 2X heat and cold resistant compared to a normal tumbler.DOUBLE WALL VACUUM INSULATION - Using the double-wall vacuum insulation technology, we ensure to keeps hot drinks steaming and cold beverages icy for a long time. This Stainless-Steel Tumbler features double-wall vacuum insulation with a clear lid.DRINK SAFE - It is made from 18/8-gauge stainless steel (18% chromium 8% nickel) - also known as Type 304 Food Grade which is food-grade stainless steel, safe to use, will not change the taste of the drink, rust, and scratch-resistant.RISK-FREE PURCHASE - We guarantee your happiness and satisfaction. If the products you received have any engraving or any defective please contact us ASAP. We offer free replacement for such production faults Kenzal Customized products.FEATURES:Double-wall vacuum insulation with a narrower bottom to fit most cup holders.Powder coating. The hole on the lid is big enough for a straw.Not recommended for dishwashers, hand washes only.Seamless construction so there is no leak point.The stainless-steel band at the top without coating is approximately 1/2"(H).It is made from 18/8-gauge stainless steel (18% chromium/8% nickel) also known as Type 304 Food Grade.