Minimalist design with heel retention elastomer and webbing toe loop 6 stainless steel forefoot only spikes with optimized 8mm length provide superior forefoot traction over varied terrain with snow and ice while maintaining underfoot stability on rock and hard surfaces Ultra-durable construction with reinforced dual density elastomer eyelets Heel webbing loop for easy on/off and heel identification 57 grams per device (size Medium)Minimalist design with heel retention elastomer and webbing toe loop6 stainless steel forefoot only spikes with optimized 8mm length provide superior forefoot traction over varied terrain with snow and ice while maintaining underfoot stability on rock and hard surfaces Ultra-durable construction with reinforced dual density elastomer eyeletsHeel webbing loop for easy on/off and heel identification 45 grams per device (size Medium) | Black Diamond Equipment Blitz Spike Traction Device Size XL