These CCS acrylic keychains are so cute!!! Each one measures 6 cm in diameter. The printing quality looks really good. It doesn't seem like the picture would get scratched off easily, unlike some cheaper acrylic keychains that I got in the past. It's hard to tell in the product image, but the big star in every keychain is actually a cut out. What a nice detail. The upper argyle pattern is semi-transparent. Very pleased with this set.