🎁Our tumbler features: 1. Food grade 18/8 stainless steel. Not easy to rust, deform, and break. 2. 20-ounce capacity, suitable for coffee, hot tea, iced cola, and other drinks. 3. Double insulation design, long-lasting heat preservation, Hot drinks can be kept warm for 8 hours, and cold drinks can be kept warm for 12 hours. 4. Comfortable to hold, sweat-proof, and lightweight. 5. Suitable for softball lovers pattern design, elegant and beautiful. 🛫Ideal softball lover gift options: This tumbler is the perfect gift for the pilot. This pilot tumbler can be carried and used in daily life, outdoor sports, or travel. It is very convenient and practical. With your full blessings and love, give your dear dad, brother, or coworker a special gift specially designed for the pilot! 🎁[Perfect Choice for Engineer Gifts]: If there are people around you who are engineers, then this tumbler will be the best choice for you to give them. This is a gift specially prepared for the engineer, which is both beautiful and practical. Give it to your dad, brother, friend, or co-worker, they will be delighted. 👷[Capacity]: With a 20-ounce capacity, this beautiful and practical tumbler is lightweight and easy to carry, perfect for almost any occasion, whether you''re at home, in the office, in the car, or outdoors. 🎁[Material and Function]: Our tumblers are made of 18/8 food-grade stainless steel, unbreakable and rust-proof. In addition, this tumbler also uses double-layer vacuum insulation and has a heat preservation function. It can be kept hot for 8 hours and cold for 12 hours. Whether drinking hot water in the cold winter or ice water in the hot summer, people will feel very satisfied. 👷[Special Design]: The main body of this tumbler has smooth lines and is comfortable to hold. It is equipped with a transparent sealing cover and a sliding switch, making the water cup less likely to leak. A perfect gift for the engineer on his birthday, Christmas, Thanksgiving, or Valentine''s Day. 🎁[Cleaning Tips]: Our water tumblers are clean, non-toxic, odorless, and easy to clean. It is recommended to clean with boiling water before first use.