Features: The birthday squad button is easy to operate and can be firmly fixed on your clothes, so you can dance at will at the party. The happy birthday pin is lightweight and comfortable to wear without adding too much burden on you. The birthday squad pinback button is small and easy to store, so you can reuse them for the next party. Specifications: Material: plastic and metal Size: approx. 1.5 inches Color: as the picture shown Package includes: 36 x Birthday buttons Warm notes: Manual measurement, please allow slight errors on size. The color might exist slight difference due to different displays.