I write therefore good for children or hobby Boxers, because you do not need it like a real punching bag as much power. A properly trained boxer finds the soft punching bag of course, "funny". This he absolutely can not fall to properly vent his frustration in it and even small children can not get hurt and such, you need not even boxing gloves! We have to walk filled with 18 kilos Vogelsand, instead of in the manual written with water and sand. It is rock solid !! Highly recommended - I'm really glad that there is something!