Ideal for walking and running on icy or snow-covered tracks. Also far more comfortable than wearing crampons for walking into remote crags to go climbing where the ground is icy but flattish (eg Ben Nevis as far as the CIC Hut), even though you have crampons in your rucksack. This ...MoreIdeal for walking and running on icy or snow-covered tracks. Also far more comfortable than wearing crampons for walking into remote crags to go climbing where the ground is icy but flattish (eg Ben Nevis as far as the CIC Hut), even though you have crampons in your rucksack. This latest version has a four spike heel and reinforced chain attachment points. This grippy, durable, slip-on traction system features stainless steel spikes connected to a flexible chain system with a tough stretchy shoe harness. The unique microspike chain adjusts itself to grip nearly any surface from ice and packed snow to wet rocks, concrete, and scree. Extremely durable, microspikes require no special buckles or straps. 3/8-inch-long spikes and dynamic stainless steel flex-chain with a tough elastomer shoe harness. Securely attaches to running shoes, shoes, wellies, boots and ski boots. As they are stretchy, sizing is approximate and if on the cusp of a size you may need to get the larger size if you want them to fit on boots as well as running shoes. Stuff sack included. 350g/pair approx. NB: These are NOT crampons, and are NOT designed for mountaineering or steep hill-walking; never attempt to use them on steep terrain - buy some crampons instead!Lessview less