Micro-Cell particles are irregular shaped spheres and have a greater tensile strength than the usual spherical bubbles. These Micro-Cell bubbles mechanically key into the binder, whereas other bubbles depend almost entirely upon coupling agents for cohesive strength.

Each Micro-Cell particle consists of a concentric cluster of micro bubbles. If one surface is broken during handling or processing, there are more bubbles within each particle to provide excellent filler properties, and maintain the radiant and UV barrier.