Material:

500D Nylon matte fabric

YKK Zipper

Features:

The Zip-on adapter allows quick and easy attachment of the Zip-on panels to the compatible plate carriers. 
The ultra-strong straps are designed to weave through the vest’s existing MOLLE rows.
Ridged design for increased back panel stability. 
Virtually anyone who owns a MOLLE plate carrier with the ability to use all of the Zip-on back panels.