【Multi-layer structure】 The surface layer of the sports punching bag is made of wear-resistant Oxford fabric, the middle layer is made of highly elastic and shock-absorbing pearl cotton, the inside is made of nylon and the bottom is cross-reinforced to prevent tearing, making it durable. The adult punching bag is suitable for mixed martial arts, kickboxing, Muay Thai, karate, taekwondo and more. It offers you a more professional boxing experience. 【High load capacity】 The punching bag set is made of high-quality materials, 4 reinforced chains, reinforced triangular buckles and a snap hook, allowing it to withstand up to approximately 26.5 pounds without collapsing. The thickened zip closure of the heavy bag has double stitching for a more secure and secure fit, so you can confidently deliver your hardest punches and kicks. 【360° rotation】 The unique 360° rotation mechanism of the hanging punching bag for adults ensures that the heavy punching bag for adults rebounds freely after a punch. With a length of 1.2 m, this heavy bag can be used for a variety of punches, kicks and elbow strikes. 【Easy to fill】 The heavy punching bag is empty, easy to carry and store. You can fill it with sawdust, sand, old fabric, shredded cotton fabric, sponge and more. However, please do not fill it with sand alone; the filling should preferably weigh no more than 80 pounds. 【Increased sensitivity】 Consistent use of the adult punching bag improves dexterity, precision and concentration, allowing you to embody the ability to react quickly, improve your hand-eye coordination and increase your punching speed. The heavy punching bag is suitable for most people, including teenagers, men, women and seniors, to train agility and promote health. Warning! Please do not fill the sandbag with sand; it can be filled with fabric strips, but the weight of the fabric strips must not exceed 40 pounds. Multi-layer structure made of Oxford fabric, nylon and pearl cotton ensures high durability during intensive training. Reinforced triangular buckles and chain system support up to 26.5 pounds for safe, powerful punches and kicks without worry. Allows free rebound after each punch for a realistic and dynamic training experience. Lightweight, empty punching bag can be filled with materials such as sawdust, fabric and sponge up to 80 pounds – flexible as desired. Improves precision, dexterity and striking speed; ideal for teenagers, adults and seniors for training and health promotion.