A company called Spigen’s has released a new all-glass screen protector called GLAS.t. The glass screen protector is about 0.4mm thick and has chemically treated tempered glass that adds minimal thickness to your iPhone 4 or 4S, and doesn’t affect your touchscreen functionality whatsoever. Spigens screen protector is also three times harder than plastic, allowing it to survive any kind of touch materials you throw at it.
The Glas.t screen protector is available here for $28
Check out this video below of Glas.t in action: