Onyx 4ft Premium Boxing Bag [Black] Premium Combat Gear. Built for Power, Designed to Endure. The Onyx 4ft Premium Boxing Bag is engineered for serious training environments - commercial gyms, boxing clubs, martial arts studios and home setups that demand the highest standard. Constructed with rugged T-Flex leather, this bag delivers endurance, impact resilience and a premium feel. Available empty or filled, in a classic black finish with Onyx branding. Key Features Heavy-duty T-Flex leather outer - commercial-grade durability with superior tear and abrasion resistance for relentless striking Full 4ft size (120cm x 40cm) - suits punches and mid-level kicks, ideal for boxing and MMA training in standard-ceiling spaces Empty or filled - customise your own fill or choose the ready-to-hang filled version (approx. 55-60kg) Reinforced nylon strap mounting - heavy-duty straps included for ceiling or beam suspension Sleek Onyx branding - high-end aesthetics to match elite facilities What is T-Flex Leather? T-Flex is a premium high-performance synthetic leather used on commercial combat equipment. It mimics the look and feel of genuine leather with added durability - impact-tested to withstand up to 300,000 strikes. It's also UV-resistant, water-resistant, and nano-antibacterial, helping minimise moisture build-up and keep gear hygienic through sweaty sessions, while internal foam layers keep the striking surface consistent and comfortable over time. Specification Details Model Onyx 4ft Premium Boxing Bag Dimensions (L x W) 120cm x 40cm Material T-Flex leather (commercial grade) Fill Options Empty / Filled Weight (Filled) Approx. 55-60kg (heavier fill available on request) Mounting Reinforced heavy-duty nylon straps (included) Finish Black outer, Onyx logo Use Case Commercial gyms, boxing clubs, MMA studios, home gyms Warranty 12 month commercial warranty Frequently Asked Questions (FAQs) Q: Can I hang the bag from a ceiling mount?A: Yes - reinforced heavy-duty nylon straps are included for ceiling or beam suspension. Ensure your mounting point is rated for dynamic loads, or use our single or double floor-mounted bag stands. Q: What's the difference between empty and filled?A: The empty version ships lighter and lets you customise the fill - grab our Australian-sourced Punch Bag Fill Material (a 4ft takes around 40kg of rag) for a softer bag, or add a sand/fabric mix packed denser at the base for more resistance. The filled version arrives pre-packed at approx. 55-60kg, ready to hang. Want it heavier? We can fill heavier on request - contact us before ordering. Q: Which size should I choose - 4ft, 5ft or 6ft?A: The 4ft is the boxing and home-gym favourite - full punching range with easy clearance under standard ceilings. Kickboxers wanting more leg-kick target should look at the 5ft, while Muay Thai and full-range strikers should go the 6ft. Q: Does it come in other colours?A: Yes - this bag is also available in white. Q: Is it suitable for kicks and knees?A: Yes - the T-Flex exterior handles impact from all angles. At 4ft, hang height determines how much low-kick target you have; for dedicated kick work consider the longer sizes. Shop More: Boxing Bags Complete Your Setup: Punch Bag Fill Material | Boxing Paddles Browse Full Range: Boxing Equipment Built to take every shot you've got - train harder with Onyx.