I was very scared at the thought of using glass as well, until my husband recently made a secret purchase that involved a free glass dildo. We live long distance so he got it shipped to our house and he wanted me to try it before he got home to see how I liked it. Now not only was I hesitant because of it being glass, but i'm not the one to masturbate as well. I've never found it pleasurable for me. However, I did try it for him and I will say that it was pleasurable, not to the point where it got me off, cause like I mentioned before I'm not one to masturbate, but it did feel quite good. However, they don't have any give, so for that reason I will stick to my vibes!