"Spire has three different courier bags: the Viro, Endo and Mojo. The Viro is the cheapest model, this bag costs $80 and is designed for small widescreen notebooks sized up to 14.1". The Endo costs $10 more and is a tad bigger so you can use it to carry 15.4" size notebooks while the Mojo bag costs $100 and can fit large 17" widescreen notebooks. In this review I take a closer look at the 2008 model of the Endo but you could also use this review to learn more about the Viro or Mojo as besides the difference in size all three bags seem to be identical."