"Glass Probe" by WHK GmbH is made of smooth clear tempered glass. No air bubbles or seams can be seen when examining the toy. The probe has a flared base so it is safe to use anally. The length is made up of six interconnected bulbs that make for a very interesting and stimulating shape. Because of this, the probe is great for thrusting, though care should be taken to avoid over zealous thrusting. This is especially true if a partner is controlling the probe, as glass is a very rigid material and can be painful if shoved in too hard or too far.

I have used this toy in a variety of ways. One of my favorite things about it is that it can be used in temperature play. You can pop it into a bowl of warm water or ice water and within a few minutes you're ready to have a brand new experience! Just don't stick it in your freezer and think you can immediately insert it without running it under cold water first. Remember the kid that got stuck to pole in a Christmas Story? You DON'T want that to happen in your nether regions!

One difficulty some may find with Glass Probe is that while using lube, the material becomes very slippery and can be hard to hold on to, so it may be best to stick to a bed or the floor until you get a feel for gripping it. Also concerning lube, because of the bulbous design of it, thrusting can get pretty noisy when lots of moisture is involved!

All in all, I would say that this would be a great toy for someone interested in trying out glass dildos without spending very large sums of money. It has the capabilities to please beginners and advanced glass lovers alike, it isn't overly large and feels great sliding in and out of your body, so smooth!