Because the Jerseys come with numbers on them.
they where jerseys that are tanktops
Volleyball Net Volleyball Court For clothes: Knee Pads Sometimes special volleyball shorts If you are on a team, volleyball jerseys
It depends on the type of font the team uses on their jerseys
The numbers and names are stiched on to real NFL jerseys. Fans can buy replica jerseys with numbers and names screen printed on for a lower cost.
Players that wear a different colored jersey on the volleyball team is called defensive. This is also known as libero.
Baseball players wear numbers on their jerseys so they can be identified.At all levels of baseball, players have numbers on their jerseys so fans, sports reporter and baseball officials can see who they are by the number they wear. Many MLB teams also have their last names on their jerseys as well, but not, for example the NY Yankees.
Usually Volleyball nets are about 30ft. by 30ft.
The University of Pittsburgh
Authentic jerseys are made to the exact specifications of real Game used jerseys. Replica jerseys are similar, but not as detailed. See the 'jersey glossary' below.
They wear numbers for the same reasons that players do. So they can be identified.