Instagram photos in a special little book. The photos are printed back to back on cardstock with a glossy photo-finish. Its a simple product, but a good one. Photos are printed at just about the same size they appear on your iPhone. The minibook measures just 3.5" inches x 2.4" inches ( 90mm x 60 mm ) and each book has 50 photos in it. Each order comes with 2 books.