In icy Alaska, footwear options abound to stay upright - The Columbian
Retractable Ice cleats :: Behance
Amazon.com: AIROKA Snow Traction Cleat Crampons for Shoes and Boots Non Slip Cleat with Adjustable Straps and 18 Steel Studs Crampons for Walking on Snow & Ice Hiking/Climbing/Mountaineering/Ice Fishing : Clothing, Shoes
David Staples: Cure for slippery winter sidewalks? Retractable spikes on boots | Edmonton Journal
Jambu Flex Traction Features and Benefits - YouTube