Dental Whitening Mouth openers (13 pieces) ◉ Brand new, unused, but has been stored in a box. The size isn't clearly written, but: Length: 8.5cm Width: 11.2cm I think it's about size M. Please note that this is just an estimate. The color is light blue. ※ When shipping, the box will be bulky, so it will be shipped without the box. The photo of the box says it contains 24 pieces, but there are 13. Please be aware of this.