Onyx Cobra Reflex Freestanding Training BagOnyx By Fitness Hero Strike. It Strikes Back. The Bag That Trains Your Reactions. The Onyx Cobra is a freestanding reflex trainer built to sharpen reaction speed, precision and head movement for boxing and MMA. Strike the inflatable ball and the stainless steel coil spring whips it back at you through a swing angle of up to 90 degrees - fast, unpredictable, and relentless. You don't just hit the Cobra; you slip it, time it and hit it again. The lighter inflatable ball rebounds quicker than any heavy bag can, forcing faster hands and sharper eyes with every round - while the spring's energetic return mimics an opponent who keeps coming. Because there's no heavy impact, it builds coordination, balance, core strength and endurance without stressing hands, wrists or joints - which is why it suits everyone from seasoned fighters drilling reflexes to beginners (and stressed office workers) throwing their first punches. An adjustable crank sets the ball height anywhere from 140cm to 175cm to suit every user in the house or gym, and the base fills with water or sand for stability. Assembly tools, hand pump and clear instructions are included for quick setup and easy storage. Dynamic Striking ExperienceThe inflatable ball provides a lighter, more responsive striking feel, encouraging quicker rebounds and enhancing hand-eye coordination. Responsive ReboundThe spread coil spring design delivers an energetic, responsive rebound that mimics real boxing conditions and pushes you to respond swiftly. Versatile DesignBuilt for a diverse range of users - from office professionals working off stress to seasoned boxers refining reflexes and speed. Specification Details Use Home or Commercial Height Adjustable 140cm - 175cm (crank adjustment) Swing Angle Up to 90 degrees Ball Inflatable premium rubber Spring Stainless steel coil spring Weight 4.7kg unfilled Base Fills with water or sand, up to 25kg Included Hand pump, assembly tools, instructions Colour Black Warranty 1 Year (unit) | 6 Months (boxing ball) PLEASE NOTE: THE BALL CANNOT BE INFLATED WITH AN ELECTRIC AIR PUMP. PLEASE USE THE HAND PUMP PROVIDED TO INFLATE THE BALL. Electric pumps deliver air too fast and can rupture the bladder - two minutes with the included hand pump is all it takes, and keeps your 6-month ball warranty intact. Frequently Asked Questions (FAQs) Q: What does a reflex bag actually train?A: Reactions. The ball comes back at you fast and at changing angles, so every strike is followed by a slip, a read and a counter - hand speed, timing, head movement and accuracy, without the joint impact of heavy bag work. Think of it as the cardio-and-reflexes partner to your heavy bag, not a replacement. Q: Will it suit my height?A: Yes - the crank adjusts the ball from 140cm to 175cm, so one unit works for kids' sessions, shorter users and taller adults alike. Q: Water or sand in the base?A: Either, up to 25kg. Sand is more stable for hard sessions; water is easier to fill and drain if you move or store it. Q: How hard can I hit it?A: Strike with speed and snap rather than full follow-through power - it's a timing tool. For maximum-force work, pair it with a free standing heavy bag or a hanging bag. Q: How does it compare to your other reflex tools?A: The Cobra is the freestanding, no-installation option. The floor to ceiling ball adds unpredictable rebound between two anchor points, the wall-mounted reflex bar forces slipping after every punch, and the speedball builds rhythm and shoulder endurance. Serious reflex training mixes them. Q: What gloves should I use?A: Light and fast - bag mitts, quick wraps alone, or lighter Viper gloves. Backed by Fitness Hero Sydney Stocked at our Sydney warehouse with local warranty support - and you can see it in person at our Bankstown Megastore. Shop More: Boxing Equipment Complete Your Setup: Onyx Bag Mitts | Floor to Ceiling Ball Browse Full Range: Boxing Range Fast ball, faster you - the reflex trainer that never stops coming back.
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