|Other Retailer||Price Checked Time||Their Price in NZD||Our Price|
|Amazon UK||2 days ago||52.98||$36.32||You save $16.66|
|Amazon US||yesterday||37.5||$36.32||You save $1.18|
Robert Friedel is a professor of the history of technology and science at the University of Maryland, College Park. He lives in Washington, D.C.
"How the ingenious zipper, a newfangled, unwanted novelty, became a ubiquitous part of daily life is the story told in this engaging chronicle peopled by a colorful cast of characters." -- Publishers Weekly