This is great when your grips get smooth and you feel like you cannot hold on to the bar. Our gymnastics team would not travel anywhere without one!
Ten-O G514 Grip Brush
Pros: Great for toughin' up grips
If you've never used one, your grips are probably very very smooth. So I love these things because like I am able to rough up my grips when they become to soft. They are very portable and great for far away meets that may take some time. Such as nationals, were your grips must last a week w/ little or no attention except for the time you are competeing