Kollectaball K-Max Ball Collector

The Kollectaball K-Max is device used to pick up tennis balls easily and quickly.
This thing can hold up to 60 balls. Saves time and your back.
Highly recommended if you are training with a lot of tennis balls or using a tennis ball feeding machine.

[@alexakrivos]

only negative you cannot turn it upside down to have a base to easily take balls out.