Ultralight and low profile winter traction device Evolved spike design bites into icy sidewalks and roads 10 Tungsten Carbide spikes per foot on all sizes Weight Per Pair: Extra Small 7.2 oz., Small 7.5 oz., Medium 8.0 oz., Large 8.3 oz., Extra Large 9.0 oz. Please refer to Kahtoola sizing chart included in product images. 1 Year Warranty. Shoes not included.