What is the plural possessive for pants?

The plural form of the noun pant (a short quick breath) is pants.

The plural possessive form is pants'.

Example: His pants' quickness told me that he had run far.

The noun pants (a garment) is a shortened form of a pair of pants.

The plural form is pairs of pants. The plural possessive form is pairs of pants'.

Example: These pants' prices are out of my range.