All Cupert glass screen protectors are made of 100% tempered glass, created to unique
specifications, and consisting of 12 layers of materials, including:
• Tempered glass
• Oleophobic coating
• Nano-structured coating
• Light adjustment film
• Color rendition
• Crystal clear coating
• Anti-UV coating
• Explosion proof film
• Silicone coating
• Waterproof coating
• Electrostatic bonding

Cupert’s highly-advanced formulation helps ensures superior protection for your device in an ultra-thin screen protector. These multiple layers of protection allow our glass screen protectors to feel more flexible, and have lighter weight, similar to plastic or Plexiglas, but offer the crystal-clear screen clarity and screen protection that can only be found in an 100% glass product.

Cupert uses an advanced fusion process that starts with raw materials and then blends them to create our unique ultra-thin, ultra-clear, ultra-resilient glass. An ion exchange process then chemically strengthens our glass. To effect this process, our glass is placed in a bath of molten salt at approximately 400 degrees C. The smaller sodium ions leave the glass, and larger potassium ions replace them. These larger ions press together as the glass cools, creating a layer of compressive stress on the surface of the glass. This makes our Cupert glass more resistant to damage.

Tempered glass is more resistant to scratching, chipping and breaking and less likely to have problems with air bubbles and hazes.

Film protectors only protects against scratches. Cupert glass screen protectors not protect against scratches, but also dust, fingerprints, oil, water, shocks and impacts. Standard plastic film protectors often have problems with air bubbles and hazes occurring because the protector is not solid. Installation is often highly frustrating and reusing a film protector can extremely difficult, if not impossible which is why many most plastic film screen protectors recommend simply replacing them.

Our Cupert protectors achieve a hardness of 9H, which makes them extremely scratch resistant to any material of lower hardness levels, such as metal, wood and plastic. They will resist everyday accidental contact scratches from objects like keys and coins.

Materials of a same or higher hardness levels can scratch the glass - things such like glass, stone, sand, diamond, bricks and concrete. The top layer is an oleophobic coating to prevent fingerprints and water/oil and this layer can be scratched. However, that is not the same thing as scratches in the tempered glass. While scratching your actual screen protector may be possible with strong deliberate force, the protector will still leave your iPhone screen in pristine condition.

Anything can be broken if enough force is applied. With normal day-to-day use, a Cupert glass screen protector is very strong. However, with strong shock damage, like hitting it with a hammer, or dropping it onto tile or concrete, it may break, yet still leave your iPhone in perfect condition. In other words, it will do its job of absorbing any potentially damaging impact and effectively protecting your expensive iPhone screen.

Anything can be broken if it encounters enough force. However, our Cupert glass screen protectors are designed to increase your iPhone screen breakage resistance to an exceptional degree. Only the very hardest, most severe blows may damage your actual iPhone. In the majority of events or accidents, a Cupert glass screen protector will completely absorb the shock and perfectly protect your iPhone screen—exactly as it was designed to do.

The unique, 12-layer formulation used in creating our glass screen protectors delivers a superbly durable 9H hardness. This makes our Cupert screen protectors far more resistant to damage.