Microspheres are tiny particles measuring between 10 and 250 microns in diameter. Although they are microscopic in size, these spheres are still much larger than the emulsion particles found in conventional adhesives. The size difference has a dramatic impact on adhesive tack. By forming a discontinuous film, microsphere adhesives limit physical contact, resulting in low peel, removability and stable tack over time. Emulsion adhesives, on the other hand, use smaller particles which coalesce into a continuous film and do not allow for easy removal or repositioning.