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Material: It is made from borosilicate glass (commonly known by the brand name Pyrex). This is a specialized type of glass that includes silica and boron trioxide, making it highly resistant to thermal shock.
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Design: The flared base is a critical safety feature, designed to prevent the device from becoming lost inside the body.
Why It Is Considered “Very Safe”
Glass is one of the most hygienic materials available for intimate products for several reasons:
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Non-Porous Surface: Unlike silicone (which can sometimes be low-grade) or jelly materials, glass is completely non-porous. This means it cannot trap bacteria, mold, or old fluids within the material itself.
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Hypoallergenic: It contains no latex, phthalates, or chemical softeners, making it ideal for individuals with sensitive skin or allergies.
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Sterilization: Because it is heat-resistant, it can be thoroughly sanitized. You can wash it with warm soap and water, or even boil it for a few minutes for a complete medical-grade deep clean.
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Lubricant Compatibility: Glass is “lubricant agnostic.” It will not degrade if used with oil-based, water-based, or silicone-based lubricants.



