Write-On Bags feature a white, write-on strip to make sample identification more accurate identification and added convenience. It's easy to write on this white strip with an ordinary ballpoint pen, pencil, or felt tip marker. The ball point pen makes writing more legible and identification easier; ink stays on longer and there are no labels to come off. The paper-like finish virtually eliminates ink smearing, and provides a surface that will accept a variety of writing instruments.

Resins used in the extrusion of film for Whirl-Pak® Bags are FDA approved. Bags are manufactured in accordance with the requirements for manufacturers of single service containers for milk and milk products. Capacity is measured in fluid ounces when bag is closed and tab folded over three times. Volume and dimensions are approximate; bags should not be used at temperatures above 180°F (82°C).