This is the BEST basketball you can buy that isn't the real NBA game ball, it's that simple. I have been playing basketball for many years now and I can say that this is the best indoor ball around. It provides a consistent bounce and great feel and with about 4 months use shows no signs of wearing down. It is very simple to add or take out air. The ball has 30% deeper grooves for improved grip and feel on shots and I can say that it does feel better with this deeper grooves. The ball feels almost identical to the official leather ball as this composite ball is second to none when it comes to indoor balls. Some may say that it is a little too "slippery" but that is only said by people who are used to the rubber balls for outdoor play. If you want the best basketball that is not the official nba game ball for gym use, this is what you want. You will not be dissappointed.