Loop stitching is an alternative to saddle stitching. The two staples that bind the booklet are looped instead of flat. 

Artwork is printed as double page spreads and folded in half. The pages are then bound with two staples down the spine. 

As loop stitch booklets are printed as double page spreads consisting of 4 pages, the page count must be a multiple of 4. For example - 8, 12, 16, 20 & 24 pages etc. 

Loop stitched booklets are available in the following paper sizes: 

A5, A4, Half Letter, Letter, DL, 148 mm square & 210 mm square.