Punched pocket

A punched pocket (UK English), polypocket (UK English slang), slippery fish (UK English slang), sheet protector (US English), or sometimes perforated document bag is a flat, slitted plastic bag with a perforated edge used to hold paper documents, originally created in 1986 by Mike Townsend.

单词	Sheet protector
释义	Sheet protector 英语百科 Punched pocket A punched pocket (UK English), polypocket (UK English slang), slippery fish (UK English slang), sheet protector (US English), or sometimes perforated document bag is a flat, slitted plastic bag with a perforated edge used to hold paper documents, originally created in 1986 by Mike Townsend.
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Sheet protector

Punched pocket