{"type":"firestarter.listing","listing":{"id":"lst_x20gkgKD","product_name":"Sandbag Fillers","category":"Sandbag Trainers","description":"What You Need to Know About Sandbag Fillers for Adjustable Sandbag Trainer\nSandbag training is a core of functional fitness. Try some ground to shoulder, ground to overhead, or simple burden carry or sandbag get-ups for time. You'll develop your mental fitness as well as your work capacity. Sandbag Fillers make adjusting weights in your sandbag trainer incredibly easy. These fillers are compatible with our Sandbag Trainers by Fringe Sport or any sandbag trainer you may have.\n\nAvailable in 4 different sizes: 10lb, 20lb, 35lb, and 40lb.\n\nHeavy-duty Cordura construction means they can take a beating.\nInclude a double Velcro closure for a secure seal.\n\nDouble stitching makes them durable to ensure your contents will be packed.\nLoad these babies up with sand, rocks, rubber mulch, or anything else you want to get your hands on.\n**Note that the sandbag fillers are shipped UNFILLED (NO SAND INCLUDED), but sand or rubber mulch is readily available at your local home improvement store. Sand sells for about $4 for 50 pounds.\n\n\nPackage Contents and Specifications\n\n\nQuantity: 1 - Sandbag Filler in 10lb, 20lb, 35lb, or 40lb Size\n\nWeight: 1 pound\n\nMaterial: Cordura and Velcro\n\nDimensions:10lb - 7 3/4\" x 26.5\", 20lb - 8 1/4\" x 23\", 35lb - 12\" x 21\", 40lb - 11 3/4\" x 27 3/8\"\n\nOrigin: China\n\nWarranty: 1 Year\n","images":["https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-107378069.jpg?v=1718682432","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106891719.jpg?v=1718682425","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106891932.jpg?v=1718671610","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106892080.jpg?v=1718671614","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106892256.jpg?v=1718671617","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106892314.jpg?v=1718671629","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106892513.jpg?v=1718671634","https://cdn.shopify.com/s/files/1/0049/4272/files/Sandbag-Fillers-Fringe-Sport-106892682.jpg?v=1718671626"],"price":25,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:45.404Z"},"share_url":"https://firestarter.network/l/lst_x20gkgKD","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 <your Firestarter API key>","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_x20gkgKD' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Sandbag Fillers' and a budget_max comfortably above $25.00 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."]}}