Felted Sky Foam Mat 10 inch square
This is a nice size foam mat, big enough for most projects. This is the size Felted Sky recommends for their kits.
Most people who are new to felting choose to start on foam to keep costs down while they are just trying it out. Keep in mind a firm foam mat will hold up awhile (depending on the types of projects you're doing) but will need to be replaced once it starts to break down.
Measures 10 in. square, and 2 in. thick.