{"type":"firestarter.listing","listing":{"id":"lst_maxPfn4A","product_name":"Trail Crampon Ultra by Hillsound","category":"Crampons","description":"Ships in 1-2 business days | Based in Vancouver, BC | Est. 2007\nAre you into trail running, hiking, or fastpacking and looking for a lightweight, reliable, and comfortable option when moving across as well as up and down mountains? Then the Trail Crampon Ultras are your choice. They are used by athletes as well as outdoor enthusiasts and give you the confidence to focus on your performance and experience rather than worrying whether or not your next step will be a slippery one! \nFeatures:\n\n\nVersatile: Can be combined with trail running shoes, hiking shoes, hiking boots, and insulated boots\nReliable & durable: Grip on packed snow and ice (uphill and downhill) enabled by 18 stainless steel spikes, including three 2/3 inch spikes on the heel. Also equipped with double link side chains, steel toe bail, and high quality elastomer harness\nSecure fit: Velcro strap across the foot \nCarry bag included: A convenient puncture-proof carry bag for storage before & after your adventure\n\nRecommended use:\n\n\nHiking (ice, snow, mud)\n\nBackpacking (ice, snow, mud)\n\nFit: varies based on footwear, see chart below for general sizing guidelines.\n_______________________________________________\nSpecs\nLength of spikes: 1/2\" - 2/3\" | 1.27cm - 1.7cm\nNumber of spikes: 18\n\nSizing:\n\n \n\n\n\nTrail Runners\n\n\n\n\n\n\nSize\nMen's\nWomen's\nEU\n\n\nX-Small\n6-8\n6-9\n40 - 42\n\n\nSmall\n8-10\n9-11\n42 - 44\n\n\nMedium\n10-12\n11-13\n44 - 46\n\n\nLarge\n12-14\n13+\n46 - 48\n\n\nX-Large\n14-15\nN/A\n48 - 49\n\n\n\n\n\n \n\n\n\nHiking Shoes & Boots\n\n\n\n\n\n\nSize\nMen's\nWomen's\nEU\n\n\nX-Small\nN/A\n5-7\n36 - 38\n\n\nSmall\n6-8\n7-9\n40 - 42\n\n\nMedium\n8-10\n9-11\n42 - 44\n\n\nLarge\n10-12\n11-13\n44 - 46\n\n\nX-Large\n12-15\nN/A\n46 - 49\n\n\n\n\n\n \n\n\n\nFishing & Insulated Boots\n\n\n\n\n\n\nSize\nMen's\nWomen's\nEU\n\n\nX-Small\nN/A\n5-6\n36 - 37\n\n\nSmall\n6-7\n6-8\n40 - 41\n\n\nMedium\n7-9\n8-10\n41 - 43\n\n\nLarge\n9-11\n10-12\n43 - 45\n\n\nX-Large\n11-13\n12-13\n45 - 47\n\n\n\nWeight: 14.3oz | 405g (medium)\n\nMaterials:\n\nStainless steel spikes\n\nStainless steel chains (double link sides)\n\nStainless stee","images":["https://cdn.shopify.com/s/files/1/0537/1177/products/Trail_Crampon_Ultra_by_Hillsound.png?v=1744663853","https://cdn.shopify.com/s/files/1/0537/1177/products/Trail_Crampon_Ultra_by_Hillsound_1.png?v=1744663859","https://cdn.shopify.com/s/files/1/0537/1177/products/Trail_Crampon_Ultra_by_Hillsound_2.png?v=1744663865","https://cdn.shopify.com/s/files/1/0537/1177/products/Trail_Crampon_Ultra_by_Hillsound_4.png?v=1744663872","https://cdn.shopify.com/s/files/1/0537/1177/files/Hillsound_trail_crampon_ultra_lifestyle.png?v=1744663764"],"price":69.95,"currency":"USD","in_stock":true,"inventory_qty":49995,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:45.887Z"},"share_url":"https://firestarter.network/l/lst_maxPfn4A","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer ","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_maxPfn4A' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Trail Crampon Ultra by Hillsound' and a budget_max comfortably above $69.95 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}