I bought a pack of Real Techniques makeup brushes a while back, and they have become my Holy Grail of brushes in my makeup bag. The one thing I was lacking was more eyeshadow brushes - especially a shading brush. I bought this one from Boots, and it comes in similar packaging to the other brushes in the range.
This one has densely packed bristles, and is still soft to the touch. I have been having a play with it, and it is best used after shadow is put onto the lid using one of the other brushes in the range, like one of the flatter brushes, and then use this in the eye crease to blend the colours out, or into each other.