The grip between you and your racket is of utmost importance. After using some overgrips that were tacky, but left me blisters, I decided I needed a much less harsh grip, without sacrificing the solid grip I was looking for. Wilson stepped up to the plate with the Pro Overgrip.
Yes, this is the same white overgrip you've seen Roger Federer and Justine Henin dismantle opponents with. I could end my review here, but that wouldn't be fair. There's a reason those two use it. First of all, the grip is soft, yet has a great level of tackiness. You can even have sweaty palms and grip it decently enough. The grip is relatively thin, so your grip size won't change dramatically. It lets you keep a relatively loose grip on the handle, allowing you to relax and really whip into shots without worrying your racket will fly over the fence.
The grip in white is a nice look for any racket, however, the mere fact it is white lends itself to getting dirty easily. Also, a product of getting dirty, leads to less tackiness. The change is not huge, but can be for some. I enjoy when the overgrip is a little dirty, as it gives me a little less stick when i'm gripping the racket, as I don't have sweaty palms usually. I've even seen a pro with an almost obliterated overgrip, as he prefers the soft overgrip, but not the excessive 'grippyness'. The Pro Overgrip comes in many colors now, so the dirt issue can be a little less pronounced.
You may need to replace your overgrip, as its not the most durable part of the racket, depending on how you like it. Overall, this is a solid buy for anyone looking for an overgrip, or for those who just want to know what it 'feels' like to be Roger.