Safely make icy, mountainous terrain your playground with aggressive, time-tested traction that delivers uncompromising control. Now on its fourth generation, our award-winning MICROspikesA(R) footwear traction has been trusted by arctic explorers and everyday adventurers alike for nearly two decades. Featuring twelve hardened stainless steel spikes per foot that dig into the most stubborn ice and snow and patented reinforced eyelets for durability, this packable workhorse is always ready for challenging conditions. Twelve Stainless Steel Spikes Per Foot - Strategically spaced, 0.41 inch heat-treated stainless steel spikes provide a stable walking platform and bite into the most stubborn ice and snow. Ergonomically Shaped Thermoplastic Elastomer (TPE) Harness - Features patented reinforced eyelets for increased durability, attaches securely to a variety of footwear and retains its elasticity down to -22AdegF (-30AdegC). Integrated Toe Bail - Keeps the toe from pushing through the front of the harness for added security while descending. Raised Heel Tab - Provides a secure grip point on the harness for easy on and off in frozen winter conditions with cold or gloved hands. Includes tote sack Weight (pair) (XS) 10.5 oz / 285 g (S) 11 oz / 312 g (M) 11.9 oz / 338 g (L) 13.1 oz / 372 g (XL) 13.5 oz / 382 g (XXL) 14.9 oz / 422 g Packed Size 5 in x 3 in x 2 in / 30 in^3 13 cm x 8 cm x 5 cm / 520 cm^3 Spikes Length: 0.41 inch / 10.4 mm 12 spikes per foot Materials Spikes: Heat-treated, corrosion-resistant 400-series stainless steel Chains: Welded stainless steel Harness: Thermoplastic elastomer (TPE) Reinforced eyelets and toe bail: Thermoplastic rubber (TPR)