The Rainbow Mega Nubby by Don Wands is a glass dildo. The shaft is full and covered in slightly raised bumps. The bumps are multi-colored. The colors include red, blue, yellow, and green. All of the colors really pop except for the green. The green is a really light green, and it almost looks clear. This was meant to be used as a vaginal probe, but users who know how to play carefully can insert this anally. Glass is a great material to use as it is non-porous, but the rigidity may turn some people off. You can expect some firm love from this magic stick, but it is going to take a miracle to get this to stimulate the G-spot or P-spot. If it doesn't work as a sex toy, it can be used as a massaging stick. Add some oil or lube, and roll it up and down the back!