These bars are cut an inch thick and range in weight from 3.9 oz to 5.3 oz depending on the weight of the additives, the height of the bar, glycerin boosts, and length of time curing. 

It is possible for a bar to weigh less later on, with the cold process evaporative effect.  If you receive a bar that is significantly less and you are dissatisfied, please don't hesitate to let us know.  We want you to be happy with your soap!   

We'd rather you have more than less. :-)