{"product_id":"neck-flex-ballistic-kevlar-series-kit","title":"Neck Flex® Ballistic Kevlar® Series Kit — Heavy-Duty Neck Harness","description":"\u003ch2\u003eNeck Flex® Ballistic Kevlar® Series Kit — at a glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat it is:\u003c\/strong\u003e the MMB Pro design stitched with Kevlar® thread, in different colors — the heaviest-duty Neck Flex harness for plate and cable loading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e Ballistic Kevlar® harness, heavy-duty weight-lifting chain and carabiners, Bodylastics® 19 lb resistance band, Bodylastics® door anchor, Neck Flex tote bag, sticker, and instructional videos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrains:\u003c\/strong\u003e neck flexion, extension and lateral flexion through vertically oriented D-rings on each quadrant of the harness; add the Revolver™ attachment for loaded rotation. Front power strap keeps it anchored under heavy load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoading:\u003c\/strong\u003e resistance bands from a door anchor, weight plates on the included chain, or a cable stack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvidence:\u003c\/strong\u003e the Neck Flex is the head harness named in three peer-reviewed papers from a Royal Danish Air Force randomized controlled trial (\u003cem\u003eBMC Musculoskeletal Disorders\u003c\/em\u003e 2015 and 2017; \u003cem\u003eFrontiers in Public Health\u003c\/em\u003e 2020). In 2021 a federal court granted a preliminary injunction after finding a competitor's harness matched the Neck Flex \"apparently even down to the stitching pattern.\" \u003ca href=\"\/pages\/neck-flex-evidence-profile\"\u003eFull evidence profile\u003c\/a\u003e · \u003ca href=\"\/blogs\/resources\/neck-flex-vs-iron-neck\"\u003eNeck Flex vs. Iron Neck\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by:\u003c\/strong\u003e Gonza LLC, Leesburg, Virginia. Designed and engineered in the United States. Sold since 2012. Five U.S. patents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Neck Flex® Ballistic Kevlar® Series has finally arrived. The Ballistic features Military Grade Kevlar® threading that is 10x stronger than steel. Along with that we integrated diamond embossed neoprene padding for ultimate comfort and rubberized PVC patches. This is truly the king of kings. \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.theneckflex.com\/products\/neck-flex-ballistic-kevlar-series-kit\" target=\"_blank\"\u003e\u003cspan\u003e\u003cspan\u003eNeck Flex® Ballistic Kevlar® Series Kit\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e represents the absolute pinnacle of cervical conditioning hardware, combining the multi-patented Neck Flex design with military-grade armor components. Built on the high-performance MMB Pro structural platform, it introduces genuine \u003cstrong\u003eKevlar® threading that is 10x stronger than steel\u003c\/strong\u003e to deliver a \"king of kings\" training system. This ultra-premium harness natively supports both heavy progressive plate-loading and dynamic resistance band training for total 360-degree cervical development.\u003c\/p\u003e\n\u003ch3\u003eEngineered Superiority Over Competitors\u003c\/h3\u003e\n\u003cdiv\u003eThe Ballistic Series stands as a direct response to inferior industry designs, such as the \u003cspan\u003eIron Neck Alpha Harness\u003c\/span\u003e. Independent video reviews from \u003cem\u003eThe Strength Classroom\u003c\/em\u003e have visually proven that competitor units slip and shift due to structural flaws. The Ballistic Kit renders those designs obsolete:\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eTrue Lateral Dog-Ear Anchors:\u003c\/strong\u003e Engineered with specialized vertical \"dog-ear\" side D-rings. This layout provides an anatomically perfect line of pull for \u003cstrong\u003elateral (side) neck flexion\u003c\/strong\u003e, preventing the harness from twisting out of place unlike the flat, horizontal loops on competitor harnesses.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eFront Power Locking Strap:\u003c\/strong\u003e Includes a built-in front power strap that anchors the harness tightly to the head, preventing it from riding up into your eyes or sliding down during heavy forward flexion drills.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eArmor-Grade Construction:\u003c\/strong\u003e Swaps out standard nylon thread for genuine \u003cstrong\u003eMilitary-Grade Aramid Kevlar® fabric stitching\u003c\/strong\u003e paired with extra-thick, welded heavy-duty steel D-rings and comfort-driven diamond-embossed neoprene padding.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho it is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eConcussion Prevention \u0026amp; Impact Mitigation:\u003c\/strong\u003e Rapidly establishes maximum kinetic neck stiffness to absorb, dissipate, and block violent rotational acceleration forces in high-impact sports like football, boxing, MMA, BJJ, and wrestling.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eHypertrophy \u0026amp; Elite Bodybuilding Aesthetics:\u003c\/strong\u003e Facilitates zero-compromise heavy plate loading to isolate the sternocleidomastoid and splenius capitis muscles, helping users build a thicker neck profile, a tighter jawline, and enhanced upper-body symmetry.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eChiropractic Alignment \u0026amp; Tech Neck Correction:\u003c\/strong\u003e Used by medical professionals to strengthen weak cervical stabilizer muscles, reversing forward-head posture caused by computer use and accelerating whiplash rehabilitation.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eComplete Ballistic Kit Inventory\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003e\u003cspan\u003eThe Neck Flex® Ballistic Kevlar® Series Harness\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003e\u003cspan\u003eHeavy-Duty Weight Lifting Chain \u0026amp; Carabiners\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (for plate loading)\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003e\u003cspan\u003eBodylastics® Patented 19 lb Resistance Band\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (with snap-reduction safety tech)\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003e\u003cspan\u003eBodylastics® Door Anchor\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u0026amp; Custom \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNeck Flex Tote Bag\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eComparing options? \u003ca href=\"\/blogs\/resources\/neck-flex-vs-iron-neck\"\u003eRead the full Neck Flex® vs. Iron Neck comparison\u003c\/a\u003e — sourced, movement by movement.\u003c\/p\u003e\n\u003ch3\u003eNamed in peer-reviewed research\u003c\/h3\u003e\n\u003cp\u003eWhen researchers ran a 20-week randomized controlled trial on 69 Royal Danish Air Force helicopter pilots and crew, they had to name their equipment in the methods section so that other labs could reproduce the work. The harness they named was ours: \"a head harness (The Original Neck Flex® Head Harness, Gonzo Companies, USA).\"\u003c\/p\u003e\n\u003cp\u003eThat choice was made during study design — before any results existed, by researchers with no stake in selling harnesses, for a protocol that ran three times a week for five months without supervision. Fit across 69 heads, load stability, padding and stitch integrity at the load points all had to hold, or the data would not.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMurray, Lange, Søgaard \u0026amp; Sjøgaard, Frontiers in Public Health, 2020.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/blogs\/resources\/neck-flex-peer-reviewed-research-danish-air-force-study\"\u003eRead the full breakdown of the study\u003c\/a\u003e\u003c\/p\u003e","brand":"Neck Flex®","offers":[{"title":"Default Title","offer_id":46868012073205,"sku":"BALLISTIC-KIT-007","price":134.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/7509\/0677\/files\/ballistic-kit-square-big_c35d6bc6-cb9f-406e-915d-22e225f29060.jpg?v=1791571507","url":"https:\/\/www.theneckflex.com\/products\/neck-flex-ballistic-kevlar-series-kit","provider":"Neck Flex®","version":"1.0","type":"link"}