Navitech In Car Back Of Seat Head Rest Mount For The Ipad 3 Third Generation & the New iPad 4th Generation with Retina Display Navitech's expandable mount is set for ultimate viewing pleasure , most will fit in this strong mounting device holding up to 5KG comfortably ideal for back seat viewing. Tablet devices can remained cased while mounted This mount is applicable to all cars with the standard two bard head rests (this is the most common head rest with two metal prongs that slide in and out of the seat.) The mounts Length and depth can be adjusted, minimum holding size 105x140x45 and holds a device a t maximum size of 195x320x55. The mount has been formed so that your tablet device can be viewed both horizontally and vertically.