{"product_id":"mcr-safety-mu3664kgw-xl-mustang-hidex-goatskin-kevlar-fr-gauntlet-xlarge","title":"MCR Safety MU3664KGW-XL Mustang HiDex Goatskin Kevlar FR Gauntlet — X-Large","description":"\u003c!-- Title: MCR Safety MU3664KGW-XL Mustang HiDex Goatskin Kevlar FR Gauntlet — X-Large | SKU: MU3664KGW-XL | ID: 8747965874264 --\u003e\n\n\u003cp\u003eWhen X-Large-handed workers in electrical utilities, forestry, pipeline operations, or welding need flame-resistant leather protection that extends beyond the wrist, the \u003cstrong\u003eMCR Safety MU3664KGW-XL Mustang HiDex Goatskin Kevlar FR Gauntlet in X-Large (\u003cstrong\u003eSKU: MU3664KGW-XL\u003c\/strong\u003e)\u003c\/strong\u003e delivers the extended coverage that driver-cuff gloves leave unaddressed. X-Large is the most common size in utility and industrial gauntlet procurement, and the MU3664KGW-XL is optimized for the 10–11 inch hand demographic that represents the core of these workforces. The combination of premium goatskin leather, flame-resistant Kevlar liner, and waterproof extended gauntlet cuff addresses the layered hazard profile of arc flash, flash fire, waterborne debris, and mechanical abrasion that field operations in energy and forestry routinely present.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium goatskin leather palm — naturally supple, thermally resistant, and abrasion-durable for field use\u003c\/li\u003e\n  \u003cli\u003eFlame-resistant Kevlar liner — inherent aramid FR protection, unaffected by laundering or wear\u003c\/li\u003e\n  \u003cli\u003eExtended waterproof gauntlet cuff — complete wrist and forearm coverage against heat, water, and debris\u003c\/li\u003e\n  \u003cli\u003eFR-treated leather back — full hand and dorsal flame resistance\u003c\/li\u003e\n  \u003cli\u003eSize: X-Large — fits hand circumference approximately 10–11 inches\u003c\/li\u003e\n  \u003cli\u003eSeries: Mustang HiDex Gauntlet (MU3664KGW)\u003c\/li\u003e\n  \u003cli\u003eBrand: MCR Safety, ISO 9001-certified\u003c\/li\u003e\n  \u003cli\u003eCompliance: FR — NFPA 70E arc flash compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDetailed Description\u003c\/h2\u003e\n\u003cp\u003eX-Large is the highest-volume size in most FR leather gauntlet programs because it serves the largest demographic segment in utility and heavy industrial field workforces. The MU3664KGW-XL is engineered to this reality — the X-Large pattern is the most precisely refined in the MU3664KGW series, with the goatskin palm panels, Kevlar liner, and waterproof gauntlet cuff all pattern-cut to X-Large-specific dimensions that balance coverage with the dexterity requirements of field task execution.\u003c\/p\u003e\n\n\u003cp\u003eGoatskin's thermal resistance properties make it the preferred palm material for FR gauntlet applications in the X-Large format. Linemen, pipeline operators, and forestry workers with X-Large hands apply significant grip force during tool handling, valve operation, and equipment manipulation — tasks that create heat buildup between the glove and skin through friction and thermal conduction. Goatskin's fine grain structure and natural thermal buffering delay heat transfer to the skin relative to synthetic alternatives, providing additional response time during thermal events and reducing discomfort in sustained hot-surface contact scenarios.\u003c\/p\u003e\n\n\u003cp\u003eThe extended gauntlet cuff's waterproof construction on the MU3664KGW-XL addresses a performance requirement that is operationally significant for X-Large-handed utility workers: maintaining consistent FR protection across variable weather conditions without glove changeout. A non-waterproof leather gauntlet cuff absorbs rain and moisture over the course of a shift, and water-saturated leather conducts heat significantly more rapidly than dry leather — effectively reducing the FR protection level below its rated performance. The waterproof gauntlet construction of the MU3664KGW-XL ensures that the rated FR performance is maintained across the shift duration regardless of precipitation or moisture exposure.\u003c\/p\u003e\n\n\u003cp\u003eFor NFPA 70E arc flash PPE programs at electrical utilities, the X-Large MU3664KGW-XL serves as the leather protector for the majority of field linemen who wear Class 2 rubber insulating gloves during distribution voltage switching and maintenance operations. The gauntlet cuff length provides enhanced coverage compared to driver-cuff alternatives at the rubber glove cuff boundary, reducing the exposure gap that arc flash thermal energy can reach during a flashover event at the glove-sleeve interface.\u003c\/p\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrical utility line work — primary size for leather protector programs over rubber insulating gloves\u003c\/li\u003e\n  \u003cli\u003eForestry and wildland fire operations requiring gauntlet-length FR coverage\u003c\/li\u003e\n  \u003cli\u003ePipeline and refinery hot work and maintenance operations\u003c\/li\u003e\n  \u003cli\u003eWelding support and cutting operations with overhead and lateral spark exposure\u003c\/li\u003e\n  \u003cli\u003eIndustrial maintenance involving hot equipment, steam, and confined-space heat sources\u003c\/li\u003e\n  \u003cli\u003eAgricultural and timber operations requiring combined abrasion and heat protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eAttribute\u003c\/th\u003e\n      \u003cth\u003eDetail\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eMU3664KGW-XL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProduct ID\u003c\/td\u003e\n\u003ctd\u003e8747965874264\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eX-Large (hand circumference 10–11 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePalm Material\u003c\/td\u003e\n\u003ctd\u003ePremium Goatskin Leather\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLiner\u003c\/td\u003e\n\u003ctd\u003eFlame-Resistant Kevlar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCuff Style\u003c\/td\u003e\n\u003ctd\u003eExtended Waterproof Gauntlet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBack Material\u003c\/td\u003e\n\u003ctd\u003eFR-Treated Leather\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMustang HiDex Gauntlet (MU3664KGW)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMCR Safety\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eFR — NFPA 70E Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrimary Applications\u003c\/td\u003e\n\u003ctd\u003eElectrical Utility, Forestry, Pipeline, Welding\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSold As\u003c\/td\u003e\n\u003ctd\u003ePer pair\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/leather-work-gloves\"\u003eLeather Work Gloves — Full Collection\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/welding-gloves\"\u003eWelding Gloves — Heat and Spark Protection\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/work-gloves\"\u003eWork Gloves — General Industrial\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/mcr-safety\"\u003eMCR Safety — Complete Product Line\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/mechanics-gloves\"\u003eMechanics Gloves — Assembly and Precision Work\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why is the MU3664KGW-XL the highest-demand size in the gauntlet series?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"X-Large represents the largest demographic segment in utility and heavy industrial field workforces, making it the highest-volume size in most FR leather gauntlet procurement programs. The 10–11 inch hand circumference range covers the majority of male utility and pipeline workers, and the X-Large pattern is the most precisely engineered in the MU3664KGW series for the balance of coverage and dexterity these workers require.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does water absorption affect the FR rating of the MU3664KGW-XL?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — water-saturated leather conducts heat more rapidly than dry leather, effectively reducing thermal protection below the rated performance level. The MU3664KGW-XL's waterproof gauntlet cuff prevents moisture ingress at the wrist, maintaining consistent FR performance across wet operating conditions. This is a functional advantage over non-waterproof leather gauntlets used in rain and wet field environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the MU3664KGW-XL the correct glove for Class 2 rubber insulating glove programs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The MU3664KGW-XL is appropriate as a leather protector over Class 2 rubber insulating gloves for X-Large-handed linemen. The gauntlet cuff provides enhanced coverage at the rubber-leather interface compared to driver-cuff alternatives. Verify that the X-Large sizing accommodates your specific rubber insulating glove model's circumference and cuff dimensions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How should the MU3664KGW-XL be broken in for maximum dexterity?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Goatskin leather requires 4–8 hours of active use to conform fully to the individual hand's contours. During break-in, wear the glove through a range of grip and release motions to accelerate leather softening at knuckle and finger flexion points. Applying a light coat of leather conditioner before first use can accelerate the break-in process and improve initial softness.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the replacement interval recommendation for the MU3664KGW-XL in daily utility use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In electrical utility switching operations with limited mechanical abrasion, the MU3664KGW-XL typically provides 2–4 weeks of daily service before leather surface wear warrants replacement. In pipeline or forestry operations with high abrasion, replacement may be needed every 1–2 weeks. Inspect weekly for leather cracking, palm thinning, and waterproof cuff seam integrity. Replace when any inspection criterion is not met.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdl\u003e\n  \u003cdt\u003eWhy is the MU3664KGW-XL the highest-demand size in the gauntlet series?\u003c\/dt\u003e\n  \u003cdd\u003eX-Large represents the largest demographic segment in utility and heavy industrial field workforces. The 10–11 inch hand circumference range covers the majority of male utility and pipeline workers, making it the highest-volume size in most FR leather gauntlet procurement programs.\u003c\/dd\u003e\n\n  \u003cdt\u003eDoes water absorption affect the FR rating of the MU3664KGW-XL?\u003c\/dt\u003e\n  \u003cdd\u003eYes — water-saturated leather conducts heat more rapidly than dry leather, reducing thermal protection below the rated level. The waterproof gauntlet cuff prevents moisture ingress at the wrist, maintaining consistent FR performance across wet operating conditions.\u003c\/dd\u003e\n\n  \u003cdt\u003eIs the MU3664KGW-XL the correct glove for Class 2 rubber insulating glove programs?\u003c\/dt\u003e\n  \u003cdd\u003eThe MU3664KGW-XL is appropriate as a leather protector over Class 2 rubber insulating gloves. The gauntlet cuff provides enhanced coverage at the rubber-leather interface. Verify circumference compatibility with your specific rubber insulating glove model.\u003c\/dd\u003e\n\n  \u003cdt\u003eHow should the MU3664KGW-XL be broken in for maximum dexterity?\u003c\/dt\u003e\n  \u003cdd\u003eGoatskin leather requires 4–8 hours of active use to conform fully to the hand. Wearing through a range of grip and release motions accelerates leather softening at flexion points. A light leather conditioner before first use can improve initial softness.\u003c\/dd\u003e\n\n  \u003cdt\u003eWhat is the replacement interval recommendation in daily utility use?\u003c\/dt\u003e\n  \u003cdd\u003eIn electrical utility switching operations, typically 2–4 weeks of daily service. In pipeline or forestry operations with high abrasion, 1–2 weeks. Inspect weekly for leather cracking, palm thinning, and waterproof cuff seam integrity.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"MCR Safety","offers":[{"title":"Default Title","offer_id":44028715139160,"sku":"MU3664KGW-XL","price":25.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/MU3664KGW-360-C01__12652.1741641242_0d022f23-7587-4a2f-ab17-7e164a463563.webp?v=1777043091","url":"https:\/\/wcsafety.com\/products\/mcr-safety-mu3664kgw-xl-mustang-hidex-goatskin-kevlar-fr-gauntlet-xlarge","provider":"WC Safety","version":"1.0","type":"link"}