Texture and material construction: This dildo is made of borosilicate glass, which is resistant to breakage related to sudden temperature changes; this makes it a good choice for temperature play, as you can safely warm it in a glass of hot water or cool it in cold water or the fridge. Glass is very slick and smooth, so a little lube goes a long way (and you may not need any). It is also nonporous, which means you can sterilize it via boiling, a 10% bleach soak, rubbing alcohol, or a run through the dishwasher without detergent. It's a great material for a sex toy. Review Details: The Harness Smooth Glass Dildo is very well-made. Crystal Delights is known for their exquisite craftsmanship, and this toy is no exception. It doesn't come with the large Austrian crystal in the base that many of their toys feature, but this makes the price a bit more affordable. The shape is very simple, but also aesthetically pleasing and quite effective. The rounded bulb at the tip measures 4.5" in circumference, or just over 1.4" in diameter. Combined with the slimmer shaft and a gentle curve, this creates good g-spot stimulation for me. I do have to warm up a bit with smaller toys to stretch my PC muscles enough for comfortable insertion, but I don't mind that - I have to do it with anything larger than 1.25", and it's worth it. This is also one of the few glass dildos with a base large enough for harness use. I recommend using a metal O-ring with it, as it's heavy and can slip out of stretchy ones. Normally I like my glass toys to be double-ended, so I get the effect of two toys in one, but the harness compatibility of this one makes up for its having only one insertable end. That base also makes it safe for anal play! This would make an excellent first glass dildo for most people.