I chose the Marucci Dura-ball's because I needed something to use to work on my son's and daughter's swing over the winter inside here in PA where it gets cold and snowy. It's difficult to get in indoor swings with baseballs because of breakage, but the Duraball popped off of the bat really well and are easy to throw. We were able to get in a lot of reps because of it to correct mechanics and level out the swing. We worked from the pitch and doing some Tee work. The Dura-ball is easy to pitch and doesn't move around like a whiffle ball, the ball easily traveled the length of the gym on good contact. The Carry Bag that it comes with is really handy and makes it easy to keep track of them instead of tossing them in the bucket with baseballs. I expect to get a couple of off-seasons out of the Dura-Balls and expect to use them in the pre-season when we can't quite get on the field yet. Overall, I definitely recommend this product if you need to get in swings outside and have windows, other breakable objects or in a gym.
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