If you're curious about glass, this bumpy dildo is an excellent toy to begin your explorations with.
The insertable shaft is 4 1/2" long and composed of a comfortably rounded tip that flows into a rattlesnake tail design. The four bulges give a wealth of sensation when they are inserted or withdrawn from the sensitive vaginal or anal entrances. The ring handle on the base is over 2" wide; this design makes the toy easy to hold, even when lubricated.
Glass is non-porous, which means that your lubricants will last longer then with conventional toys. For added temperature thrills, you can also try placing the dildo in the refrigerator or a bowl of warm water for a few minutes before use.