I really can't say enough about glass. It's more erotic than I realized it was- it made me nervous at first because I had never played with it before. But it's smoothness and quickness to warm to body temperature is lovely, and it's very very easy to clean. I am absolutely a convert, and this has lasted three years now and is still a favorite!
Feels great, good size...
But I had to get a replacement, as the first one had a stress fracture INSIDE the glass (no crack or anything on the OUTSIDE)--but because of the nature of this product, I wasn't going to touch it with any cracks anywhere in/on it!
I contacted the seller, let them know what was going on (because of the color, angle, placement, etc., of the crack IN the plug, I couldn't get a picture--they didn't care, they replaced it anyway).
When I got the replacement, it was 100% perfect.