1}" class="ng-binding">Intense
research and development, and extensive testing, have gone into
developing the HEAD RESET Ball, a more sustainable choice for coaches
and recreational players. As part of HEAD's RETHINK project to help
reduce the sport's environmental impact, this semi-pressurized and
durable ball has a special compound that includes pre-consumer recycled
material. The special compound extends the life of a ball that has 50%
lower air pressure than standard tennis balls. The 4-ball carton is made
from 100% recycled materials and, instead of paper coating, the colors
are printed directly on to the carton.