What is a notable characteristic of oversize parcels in terms of postage?

Oversize parcels are charged regardless of weight, which means that the postage cost applies even if the parcel is lighter than the standard weight threshold. This is a notable characteristic because it indicates that the size and dimensions of the parcel are significant considerations for determining postage, rather than just the weight. The pricing structure for oversize parcels is designed to account for the additional handling and transportation costs associated with larger items, regardless of how heavy they might be.

This policy is important for both customers and USPS employees in terms of packaging and shipping procedures, as it simplifies the calculation of postage for larger parcels; customers can expect to pay a specific rate for oversize items, without needing to weigh them.