I bought this case for my Toshiba AT100 Toshiba AT100-100 10 inch Tablet (Thrive in the US) as I'd read reviews stating that this tablet didn't have Gorilla Glass for its screen. I was obviously concerned when transporting the tablet so I was on the lookout for some more protection and I came across this case.
The case is specially designed for the AT100-100 as is evident in the product pictures. Cut outs in the leather allow access to all the available ports and also the volume control and power on/off buttons. There are additional cut outs for both cameras as well meaning that you don't compromise the use of the tablet when fitted in the case.

Update 08/01/12 - I initially had problems getting the case to stand up correctly as shown in the product image, however I realise I was trying to stand it the wrong way. Once I figured this out it does work relatively well. I've removed the negative comments I initially posted concerning this.

I was very impressed by the look, construction and manufacture of the case and it looks pretty stylish.
The AT100-100 is a beast of a tablet in terms of weight and feel in and this case does add a bit to its bulk but its really very nice and has the structure and quality to provide some great additional protection.

Pros
Quality product that is very sturdy
Looks great
Fits the AT100-100 perfectly and allows use of all its functionality

Concluding I have to say that if you own a Thrive/AT100-100 then this case is a must buy if you intend to transport your tablet anywhere. My rating is 5 star.