Answer: pocketprotector

AnswerCrossword Clue
POCKETPROTECTORIt could keep you from losing your shirt
POCKETPROTECTORPart of a nerd's attire
POCKETPROTECTORPen holder
POCKETPROTECTORSquare accessory
POCKETPROTECTORFashion accessory?
POCKETPROTECTORIt holds things close to the heart