SBRX Black Punching Bag (Empty) – Premium Design for Self-Filling SBRX Black is a premium bag ready to be filled with DBXBushido rubber granules (target weight approx. 55 kg ). Thanks to the EVA6mm foam padded under the cover , even when filled with granulate, it retains a soft, springy contact and the characteristic stability of the structure. The whole thing is based on a steel hoop running inside the body – it is responsible for maintaining the shape of the bag and evenly distributing the weight during intense training. Why choose SBRX Black (blank)? ✅ Flexible configuration – you can choose the amount of granules yourself to obtain a weight tailored to your needs (recommended maximum approx. 60 kg). ✅ Contact comfort – 6mm EVA foam under the cover softens contact even when fully filled. ✅ Durable construction – REXION leather and internal reinforcements ensure long-term durability. ✅ Stable shape – the steel ring maintains an even shape during punches and kicks. ✅ Economical delivery – smaller shipment size and lower transport costs thanks to the hollow structure. ✅ Lower attachment – allows you to stabilize the bag, providing even greater control during training How is SBRX Black constructed? 1. REXION leather (thick layer) – durable with increased resistance to abrasion and cracking 2. Reinforcing mesh – acts as internal reinforcement, stabilizing the structure of the sheathing 3. 6mm EVA foam – improves shock absorption and contact comfort, even with a hard filling 4. Fabric lining – gives shape, facilitates filling and maintains an even surface ✅ Built-in steel rim – stabilization around the entire circumference A steel hoop runs horizontally around the entire bag in a designated area (built under the cover). Its role is to stiffen the structure and maintain geometry during intense training. For whom? For clubs and demanding players who expect PREMIUM quality, structural stability and repeatable training conditions day after day. Complete, fill out, train your way Combine the SBRX Black bag (empty) with DBXBushido rubber granules to create a fully customized training set. Buy now – decide the weight, hardness, and intensity of your workout.