My package is normally for shipments where you are providing your own box.
An Envelope is selected when you are using a Carrier Envelope. It will normally say FedEx Envelope or UPS Envelope. (See image below)
A Pak is selected when you are using a Carrier Pak. It will normally say FedEx Pak, FedEx Padded Pak, UPS Pak, or UPS Pad Pak. (See image below)
FedEx and UPS Padded Paks. These ones contain bubble wrap on the inside.
FedEx and UPS Envelopes. They normally provide legal size envelopes however sometimes you can get letter size envelopes from the carrier.
Note: Secureship does not provide any carrier supplies.