game-worn

Not worth it
I bought these things and they really serve no purpose. When I put them on the controllers they ripped. I would not buy this again.

Just Okay
I got these so our kids would quit fighting over whose Wii remote was whose. They look nice, but the quality isn't great. I had zero trouble getting them on...certainly didn't take over a minute to smooth each cover over each remote. I did rip the blue remote cover just putting it on, so I don't have high hopes for these lasting very long in our group of rambunctious kids, but at least they look cool for the time being.

Are tailored to the controls
I think a good product, then adjusts the measure of checks and protects, giving them color to differentiate themselves

Overall a good product
The silicone seems a bit flimsy at first, so I was careful not to rip it as I was putting them on, but it is actually stronger than it looks. Also, I agree with some of the other reviewers that they are not super-easy to get on and off, so I wouldn't recommend buying this unless you have a induction charger system (like the one by Nyko, which I have) where you don't have to remove the silicone sleeve in order to recharge the battery pack. But they do fit well once they're on. And the colors are fun!

Note: the nunchuk sleeves will look impossible at first to get on because the hole at the bottom is so small, but with a little coaxing it will stretch to accomodate the size of the plug and then go back to its original size after the plug has been pulled through.

Save your money
Pros:
As far as looks go, my girlfriend and two kids love them. They do improve the grip on the controller although not as well as the silicone jackets that come stock with the Wii. The stock silicone jackets also provide some amount of protection when the controller is dropped, these skins do not. Yes, I know that's what the strap is for but if you have kids, the controllers will get dropped.
Cheap, which leads into the cons.

Cons:
Very flimsy. The first one I put on was the pink one and it ripped at the bottom, which seems to be a common complaint with these. The bottom is the part that has to stretch the most to make it slide over the controller. I was much more careful putting on the other three and they didn't rip however, getting them on and off intact is no quick and easy task. I suspect that the first time the batteries die and the kids try to change them, the skin will rip.

Also, the controllers don't fit into the Wii wheel, gun or any other accessories while the skin is on. We play a lot of Mario Kart Wii here so I expect these skins to be taken off and on quite a bit to use the wheels and again, I don't expect the skins to last long.

I think we'll be better served to save up and purchase these instead.
Wiimote Red Pink Jacket Skin (2 Pack)
They're a bit more pricey but as I've discovered, you get what you pay for.