In icy conditions, your life can hit the skids whether you’re trekking, shoveling or traversing city streets. Get a grip with Blitz Spike Traction Devices. Six stainless steel spikes on the forefoot chomp down on boilerplate ice to backcountry snow and everything in between. Lightweight harness stays put on hiking boots and athletic shoes. And at only 1.5 ounces per device, they’ll keep you light on your feet as you rack up the miles.