This LUFFY Marimo ball with jar is adorable! Comes with the Marimo ball, cute glass jar with cork stopper, small blue glass beads and a small twig-looking sea-fan. I didn't think much of the sea-fan until I had the jar assembled, now I love it. The Marimo ball is very easy to care for, just take it out of the bag, run some clean water over it and GENTLY squeeze. Once you add the beads, water and ball to the jar, drop in your sea-fan and replace to cork stopper. I put mine on the window sill and it is so pretty! I can see why they are advertised as toys for your Betta Fish. Great product!