elasticized

/IH0 L AE1 S T AH0 S AY0 Z D/
verb
  1. 1

    To make (clothing, etc.) with elastic, by attaching elastic bands, so it can be adjusted while maintaining a snug fit.

Source: https://en.wiktionary.org/wiki/elasticize, https://en.wiktionary.org/wiki/elasticized