Tennis Equipment
Penn Championship Extra Duty Felt Tennis Balls - 6 Cans, 18 Balls
America's #1 selling tennis ball. Official tennis ball of USTA League Tennis. Controlled fiber release for consistent nap. Natural rubber for consistent feel and reduced shock. Interlocked wool fiber for longer wear.
https://www.bizrate.co.uk/tennisequipment/penn-championship-extra-duty-felt-oid8237180455.html