The Paper A4 Insert Collection - Spring Sensation. The Paper Boutique – Spring Sensation Collection is a beautiful mix of pastel papers with an array of hopeful spring images and matching useful words the collection will mix and match to make cards, scrapbook pages, mixed media projects, in fact this collection is a beautiful set of papers that will come out time and time again. Insert Collection has 40 A4 insert papers in an assorted panel designs 4 sheets of each design the sheets are 120 gsm a perfect accompaniment to the other pads in the range. The collection coordinates with Paper Kit (PB1782) an A4 Coloured Card (PM1780)Embellishment Pad (PM1779), and Paper Pad (PB1778) - all sold separately.