Lightweight, clear plastic for general storage.
Includes a white writable area for easy labeling (often labeled as B34W ). B34zip
If you are referring to technical or construction "Zip" systems, here are the most relevant guides: Installing ZIP System Sheathing: Taping Seams and Corners Lightweight, clear plastic for general storage
These bags are standard reclosable plastic bags primarily sold by JPB Jewelry Box and similar industrial suppliers. 3 inches by 4 inches. Material Types: B34zip
"B34zip" most commonly refers to used in jewelry and supply industries for organization and storage . B34P Zip-Lock Bag Guide
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