The bath books usually packing by the polybag with header card.

Also said packed with insert in self-sealing pp bag, the pp bag with 2 holes puched in both front ad back to no suffocation hazard.

The header card usually is 300g/sm card paper, 4C/0C printing, with euro slot.

The finished samples as here,

Standard bath book packing
The bat book packing
The bath books packing by the polybag with printed header card
The bath book packing by the polybag with 4C/0C printing header card

Pls remember the header card size usually is bigger than the bath book.

For example the bath book size is 150x150mm,

the header card usually is width 170 x height 52mm (folded), expand 170x 104mm.

Or the header card is width 170mm x height 45mm (folded), expand 170 x 90mm.

The height you could adjust, we will produce based on your artwork. Only the width you need pay attention.

However when you send the artwork, we will check. If it is good or not good, we will let you know.

Then we will send you the printing compostion for your approval.

After approval, we will go ahead the printing. (Printing the samples or Printing the mass production for the re-order).