The vest first

The vest had dissolved at the shoulders and fell to floor. She saw this and picked it throwing the vest away in a nearby hazardous waste bin.

“Excuse me Mr. Simmons, my vest had dissolved can I go to my locker to grab my spare?” Ashley asked.

“Yes but make it quick.” He said mildly annoyed not bothering to look up at the young student.

Ashley promptly exited the class.