If you're looking for a streched canvas that you can watercolor on, this is the product for you.
The Archival Pre-Stretched Watercolor Canvas - 16" x 20" from Fredrix is a pre-streched, 100 percent cotton painting canvas that can be used as a surface for any water-based paint. Unlike paper painting surfaces, this canvas is durable, and won't buckle or tear under strong brush strokes. You can create a diverse array of brush effects on this canvas without having to worry about damaging the surface.
The canvas' unique woven composition makes it easy to lift out paints and correct mistakes, making it a great choice for experimentation.
This diverse canvas also looks great on display, no matter how you choose to frame it. Hang it with or without glass, and either way, you'll get the unique look that an artist can only get from canvas.