I don't know, I was scared at first and then I bought the Amazing Swirls and loved them ever since. I like how slick and easy to use they are. You can actually FEEL the texture unlike some silicone toys. There are more texture options with glass. It's pretty. I love the feeling of a cool glass wand and it warming up to my body temperature. I just ordered two more over the weekend. That will bring my collection up to 9. I have 3 others on my wish list and 3 others that I want that EF doesn't sell
I've been going back and forth on amazon checking out the one and I can't wait any longer, I gotta order it!
I think you should try one. I don't get girthy ones. Glass is just.....GREAT!