IPA: //aʊtˈsɜːrt//
KK: /aʊtˈsɜrt/
A type of promotional material that is attached to the outside of a product to provide additional information or advertising.
The company included an outsert with the product to highlight its special features.
Outsert → It is formed from "out-" (meaning outside) and "insert" (from Latin "inserere", meaning to put in). The word "outsert" refers to something that is put outside, typically a printed advertisement or information that is attached to the outside of a publication.
Think of something being 'put outside' ('out-') as an 'insert' — that's why outsert means an attachment on the outside.