It's identical to the Sonic Wave but without the two tone. You get two in the package, one clear sleeve and one black sleeve. No extras are included but I think the cases are well worth the money.
The unique thing about these cases or sleeves is the fact that only the edges are covered. The screen is left exposed. This can either be a good thing or a bad thing. If you have a BSE like I do you'll love this case. It's a perfect fit even for those with the full body BSE like me and the silicone is much harder than the cheaper cases. The edges are not flimsy at all and grip the Touch extremely well. Another nice feature of the case is at the bottom. Instead of a wide slot-like opening like you would see on most other silicone cases this has separate openings for the dock port and headphone jack. It also covers the volume rocker and power button.
It feels good in the hand and has a nice gripy texture on the back of it with the name Belkin embossed near the bottom of the case. Inside, the case is smooth. I prefer the black because it goes better with the iPod Touch but the clear looks nice as well and actually allows you to see the Apple logo and iPod name beneath it which I thought was nice.
I bought mine at Walmart for $21.39 including tax and I'm very happy with my purchase. I bought the Griffin Flex Grip but the screen opening was too small and it covered the words on the dock. So, I took them back and bought the Belkin Grip Tight Groove.