PROGRIP MAX is a proprietary lotion that players apply to their hands
for improved grip. The lotion evaporates in seconds and deposits
microscopic silica particles on the skin. These particles combine with
natural oils in the skin to form a fine grade, sandpaper-like moisture
barrier on the player’s hands. This barrier significantly increases the
friction between a player’s hands and his/her racket handle, thus
effectively enhancing grip.