An extended release protein. Doesn't make any difference to your results, but it does make you feel fuller. Mixes a lot thicker than a whey, but tastes a bit gritty. Even so I really enjoyed the Fudge Brownie flavour and would buy it again.
It isn't a pure isolate, but that makes so little difference, In fact, blends have been shown to be better for muscle gain than pure isolates anyway, so save your money.
The Dymatize is good for baking. Just don't overwhelm the other ingredients with the protein or the end result will be quite rubbery.