The round/ circular capsule that contains polyethylene glycol and dye is the paintball. These paintballs are used as ammunition fired by the markers to tag an opponent. Paint contained in these paintballs can be easily wached out and leaves no significant stains.

Usual paintballs and markers are regarded as .68 caliber, but some are even larger the .68 caliber. Paintballs are sensitive to heat and moisture. Any change in temperature may greatly affect the velocity of the paintball. Both the heat of the sun and moisture my misshape a paintball. Expensive paintballs are more efficient and have higher quality fills. These expensive paintballs are also contained in more brittle shells so that they will not bounce off whenthey hit the target.