Borosilicate-based Glass (Pyrex Glass)
Pyrex which is the brand name for borosilicate glass, is made by adding boron into a mixture of glass (sand, soda and ground lime.) Pyrex is a very hard material that has a high chemical resistance and mechanical strength. It’s almost virtually unbreakable and wont shatter like normal glass but can break into larger pieces.
Pyrex glass is nonporous and smooth. It is easy to clean with just soap and water or a sex toy cleaner.
Since Pyrex is so durable almost any form of lubrication can be used on this product. It is even safe to use Oil-based products as well as water-based lubricants and silicone-based lubricant.