UV Color-Changing Plastic Reusable Cold Cup with Straw - 24 fl oz It's hard to tell when exposed to sunlight, but it turns a slightly dark green color. (Image is like images 1 to 8) Capacity: 24oz/709ml (Venti size) Material: Plastic Authentic product purchased from a store in the United States. Brand new, unused. As this is an overseas product that was displayed in a store, there may be package stains, color unevenness, scratches, etc. from the time of purchase. Please understand this before purchasing. #Click here for a list of W's Starbucks items Overseas exclusive, not sold in Japan, America, North America exclusive