Heart Rate Jail is a simple training protocol with one unforgiving rule: keep your heart rate in Zone 2.
Someone passes you? Let them go. The road tilts upward? Slow down. Your legs feel great and you want to push harder? Too bad—you’re still serving your sentence. No chasing, no surging, and no turning an easy workout into another race. That restriction is exactly why it’s called jail.
The front shows a judge declaring, “I Sentence You to Heart Rate Jail.” The back shows the heart locked behind bars, where it must remain until the workout is over. It’s the perfect two-sided shirt for runners, cyclists, triathletes, and endurance athletes who understand that staying easy can require more discipline than going hard.
Two-Sided Design
Heart Rate Jail courtroom artwork on the front
“I Sentence You to Heart Rate Jail” speech bubble
Heart locked behind bars on the back
Based on a Zone 2 training protocol
Made for athletes disciplined enough to let somebody pass
T-Shirt Details
100% combed and ring-spun cotton
Heather colors contain polyester
Fabric weight: 4.2 oz./yd.² (142 g/m²)
Pre-shrunk fabric
Side-seamed construction
Shoulder-to-shoulder taping
Soft, lightweight fabric with comfortable stretch
Blank product sourced from Nicaragua, Mexico, Honduras, or the United States
Disclaimer: The fabric may appear slightly sheer, especially in lighter colors or under certain lighting conditions.
Size guide
| |
LENGTH (inches) |
WIDTH (inches) |
CHEST (inches) |
| S |
28 |
18 |
34-37 |
| M |
29 |
20 |
38-41 |
| L |
30 |
22 |
42-45 |
| XL |
31 |
24 |
46-49 |
| 2XL |
32 |
26 |
50-53 |
| 3XL |
33 |
28 |
54-57 |
| |
LENGTH (cm) |
WIDTH (cm) |
CHEST (cm) |
| S |
71.1 |
45.7 |
86.4-94 |
| M |
73.7 |
50.8 |
96.5-104.1 |
| L |
76.2 |
55.9 |
106.7-114.3 |
| XL |
78.7 |
61 |
116.8-124.5 |
| 2XL |
81.3 |
66 |
127-134.6 |
| 3XL |
83.8 |
71.1 |
137.2-144.8 |
