Packaging Styles - The Graphic Design: Reference and Specification - page 99

f o l d e r s , s l e e v e s , a n d ot h e r t y p e s o f f o l d i n g c a r to n s
These packaging options suit the needs of specialty packaging and specific products.
Open-End Sleeve with Finger Holes
Finger holes and open-end construction allow easy access to the object inside the sleeve.