This print-in-place openable backpack will fit both “EASY 13” and “MINI 13” poseable jointed figures by soofazone, which have a slot for a rectangular pin on the backside of the chest piece - as opposed to “LUCKY 13”, for whom this backpack was originally designed by Alioth.

The author remixed this model.
I remixed Alioth's “Openable Backpack” originally intended for the “LUCKY 13” with Bruno Vinicius's "Mini 13: Wings" to create create a Backpack that fits both the "EASY 13" and "MINI 13" poseable jointed figures by soofazone, which have a rectangular slot on the backside of the chest piece.