These 18 oz. Cylindrical Stainless Steel Vacuum Flasks have unique designs that are easy to carry and store. They are cylindrically shaped and have screw-top access. Their sleek stainless steel material helps insulate liquid on the inside while the tight screw-top seal stays warm all day. These 18 oz. Cylindrical Stainless Steel Vacuum Flasks are particularly popular items in corporate settings where coffee drinking is part of the daily routine. You can use these 18 oz. Cylindrical Stainless Steel Vacuum Flasks to serve multiple coffee cups daily and even have enough to share with friends and co-workers. These quality vacuum flasks also have large custom imprint areas which increase their value as promotional products.