üç∫Personalized Gifts: You can define the personality of the tumbler by yourself, add logos, decals and letter combinations, and combine them with fashionable colors to make an exquisite tumbler. They will be the most popular birthday and Christmas gifts. üç∫Double-Wall Vacuum: KOODEE stainless steel skinny tumbler adopts double-layer vacuum heat insulation technology. Keep hot drinks for 12 hours and cold drinks for 24 hours. Vacuum technology makes the outer wall sweat-free, no matter what beverage you drink, you can keep your fingers dry and will not burn your fingers üç∫18/8 Stainless Steel: We have not cut corners.The inner and outer walls of the 20 oz skinny tumbler all made of high-quality 304 stainless steel, free of BPA and rust. High-quality tumblers ensure your daily drinking water health üç∫Powder Coating: Unlike most slim tumblers on the outer wall of the paint, we use powder coating, which will never fade or fall off, so it can maintain a long-term appearance and texture. The inner wall is seamless and polished to keep it smooth at all times, so bacteria and dirt can be easily washed away üç∫Perfect Size: The slim insulated water tumbler is small in size, light in weight, thin and easy to hold, suitable for most car cup holders. In addition, we have prepared 4 lids, 4 straws and 2 straw brushes for this set, so that you can replenish moisture at any time