This listing is for 24 9 oz. cups in a 6 color variety pack , ideal for cocktails, ice cream, children"s drinks and many other cold beverages. To use the cups you simply activate the glow stick and snap it into place under the cup rim. This product represents a breakthrough in glow cup pricing as other alternatives are vastly more expensive. Another important benefit to our glow cups is they can be recycled once the glow stick is removed. This patented cup is also available in solid color packs of all blue, red, green, yellow, purple or orange and in 18 oz. sizes.