width: 5 cm

circumference: 50 cm

thickness: 0.5 mm (green), 0.7 mm (red), 0.9 mm (blue), 1.1 mm (black)

resistance: 1-5 kg (green), 5-10 kg (red), 10-15 kg (blue), 15-20 kg (black)

• green rubber - light
• red rubber - medium
• blue rubber - heavy
• black rubber - X-Heavy