The Copic Bleedproof Marker Pad here is made in Italy. It comes in three sizes: A4, A3 and A2. Each pad comes with 50 sheets of smooth white paper.

The paper is 70gsm, just about as thick as typical copier paper. They don't really have to be that thick because the paper is alcohol based and treated to prevent ink bleeding through the opposite side.

They are also thin enough to be used for tracing. Useful if you require that.

Here's a quick sketch I did. It was drawn with pencil before inking with the 0.8 Copic Multiliner pen - which works very well on it. Then I erased the pencil lines which didn't cause any fading to the black lines. The pencils won't come off after marker ink is applied over them.

The ink pretty much stays on the surface instead of soaking through. You save some ink.

I usually use my Copic markers on sketchpads with higher absorbency. Comparatively speaking, light colours seem to have a tendency to be lighter on the marker pad because there's no soaking through. When I first applied the skin tone colour, I thought my marker dried out.

The paper can take on multiple coats of ink. On the left are three coats of 100 Black applied with the wide marker. Technique must be right to achieve flat colours with the smaller broad tip markers. My technique for the jeans is a bad example.

On the opposite side, it barely bleeds through, although you can clearly see the shades. The next page is perfectly safe from ink.

The Colorless Blender don't work well with the paper. Since the ink stays on the surface and doesn't really go anywhere, it just smudges the ink.

Here's single colour blending with the B97 Night Blue. Each stroke towards the right has one more layer added.

Here's blending with four gray markers (N1, N3, N5 and N7). The result isn't that smooth since it's a two shade increment. Check out the texture on the smooth paper.

I also tried a bit of watercolour and the area buckled quickly with the water. Definitely not suitable for watercolour.

The best paper for Copic? I guess this marker pad would be more suitable for professionals designers and architects. For casual sketches, I'll go with sketchpads with a bit more absorbency because of the issue with lighter colours.

The Copic Bleedproof Marker Pad is available at Amazon (US | UK | DE | JP), and most art stores.