Cricket Balls

Cricket Balls
Cricket balls are made from a core of cork, which is layered with tightly wound
string, and covered by a leather case with a slightly raised sewn seam. The
covering is constructed of four pieces of leather shaped similar to the peel
of a quartered orange, but one hemisphere is rotated by 90 degrees with respect
to the other. The "equator" of the ball is stitched with string to form the
seam, with a total of six rows of stitches. The remaining two joins between
the leather pieces are left unstitched.
Cricket balls are traditionally dyed red, and red balls are used in Test cricket
and First-class cricket. White balls were introduced when one-day matches began
being played at night under floodlights, as they are more visible at night.