This wide portable cup with hand strap is made of food-grade stainless steel inside and outer, no metal taste and won't retain or transfer flavors. The double wall vacuum insulation technology completely isolates the interior of your bottle from the outside. The water temperature in the bottle is not affected by changes in the outside temperature. This bottle can meet your daily drinks perfectly, they can hold more water than you think and are easy to handle. The wide mouth is easy for cleaning and ice-filling. Solid color design let you stand out from the crowd and you will love it. It is the best companion for you to travel, exercise, and work. It is also the best gift for your friends and family. Custom logo is available.