The BEST microspikes! Perfect for winter hikes or your driveway Easy on, easy off and durable In perfect shape Size S Updated MICROspikes deliver unrivaled traction on icy winter trails. Easy to use with almost any shoes, they're tough enough to handle any adventure—and small enough to fit easily in your pocket. Twelve 3/8 in. hardened stainless-steel spikes per foot dig into icy terrain Reinforced eyelets increase durability Integrated toe bales hold spikes securely in place Elastomer harnesses are 38% lighter than the previous version; harnesses stay supple to -22°F (-30°C) Stainless-steel flex chains help prevent snowballing Heel tabs for easy on/off Tote sack included Backpacker magazine Gear Hall of Fame (2017) Imported. Sizing for hiking boots is as follows: Small fits Women's shoe sizes 6 - 9 / Men's shoe sizes 5 - 8 Medium fits Women's shoe sizes 9 - 12 / Men's shoe sizes 8 - 11 Large fits Women's shoe sizes 12+ / Men's shoe sizes 11 - 14 X-Large fits Men's shoe sizes 14+ Sizing for insulated Pac boots is as follows: Small fits Women's shoe sizes 6 - 8 / Men's shoe sizes 5 - 7 Medium fits Women's sizes 8 - 10 / Men's sizes 7 - 9 Large fits Women's sizes 10 - 12 / Men's sizes 9 - 11 X-Large fits Women's sizes 12+ / Men's sizes 11 - 14