5x, 100 grit, extra large sanding sponge, medium, 9" x 3-5/16" x 1", durable, abrasive coated foam, high performance, p-graded, open coat, flexible & comfortable to shapes & contours, washable, lasts up to 5 times longer than sandpaper with resistance to tearing, cuts faster, lasts longer & resists clogging, makes sanding easier of various surfaces & hard to reach area, extended life, rinse & re-use.