- Material: Natural latex
- Length: 60cm/23.62 inch (tolerance: +/-1CM) Width: 5cm /1.97 inch
- Green: 600x50x0.5mm 5-10 pounds
- Blue: 600x50x0.5mm 10-15 pounds
- Yellow: 600x50x0.7mm 15-20 pounds
- Red: 600x50x0.9mm 25-30 pounds
- Black: 600x50x1.1mm 35-40 pounds