I've never had a toy, which equally can deal with all my cats and excited for hours. The essays are made of natural materials (feathers, down etc.) so that the cats think they have caught a real bird and love to wear this proudly around. If you have attached a paper on the bar, the fun really begins. By design, it is light and thin, yet robust, and not too flexible. The essays are easy to replace and nicely weighted, making the games (also for men) very easily. Fatigue always occurs boredom.
One thing is clear: This was long worked to develop a toy, love the cats and people like to use. Absolute buy recommendation!