PEARLPET bottles means carrying much more volume in the same load space due to the smaller dimensions and lesser wall thickness of PET bottles. Undoubtingly, the payload / freight will be less than that of Glass, Tin etc. since PEARLPET bottles weigh so much less
NOTE :- A study was carried out for 114 ml of Benadryl bottle both in glass and PEARLPET and following results were observed.