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Threshold Field Test Packet (4 Cards)1 × $4.95
ZONING, Fitness in a Blink, Wall Chart1 × $20.00
Threshold Cycling: 30 Zone Training Rides to the Beat from Heart Zones1 × $19.95
Heart Zones Blink 3.0 Plus Sensor2 × $79.99
HZT to the MAX! Training Bundle (DVD + Booklet)1 × $59.95
