Its a metallic mystery! You never know which floating character you will get- Brilliant Mer-Bear, Metallic Mer-Tiger, Sparkly Sammy, or Uni Mer-maiden. Clever and collectible this mighty pen kit allows you to make your very own light-up liquid wand pen! Just add the character pen pal, micro-bead plastic "bubbles", and mineral oil to create your habitat! Watch the cute pen pal swim up the pen as the other elements cascade to the bottom. The pen also lights up when you press to write - wow! Makes a great gift.