Heart Zones Zoning Workout Field Test Cards (4 Cards)

Heart Zones help you consider training in the ZONES! Get the new ZONING Top of Blue/Top of Yellow Feild Test Training Packet. The easy-to-carry packet includes 3 full-color cards (4-1/4 by 6 inches) with training zone numbers on the front and threshold zones on the back. If you want your friends, indoor cycling class, or other group to train using the Heart Zones patented ZONING Training system, these cards are a must to help you decide what zones to use and why.