This Raz Tech Tempered Glass Screen Protectors are made from specially sourced glass. This provide extra higher level of quality to give you: - The best possible feel - The longest lasting fingerprint and dirt protection - Improved strength and protection - Improved Screen Clarity Features: - His glass is tempered in heat ovens for twice as long and almost twice as hot as traditional tempered glass. This provides you additional strength in the glass - This glass has an additional special anti- fingerprint coating to provide you even longer lasting fingerprint and dirt resistance - Lastly, the edges of the glass are specially rounded to provide an even smoother, softer feel on the edges of the glass Please Note: Important. Some cases for this phone can be extremely tight on the edges of the phone and can lift up the glass from the screen. Please leave your case off of your phone for 24 hours to allow the glass adhesive to fully attach to the screen of your device. What's in the box Tempered Glass For Samsung Galaxy J4 J400F/DS (Pack of 2)