Four different levels to choose from:
Red (20-35 lbs resistance): 2080mm*13mm*4.5mm(Length*Width*Thickness)
Black (30-50 lbs resistance): 2080mm*22mm*4.5mm(Length*Width* Thickness)
Purple (40-80 lbs resistance): 2080mm*32mm*4.5mm(Length*Width* Thickness)
Green (50-120 lbs resistance): 2080mm*44mm*4.5mm(Length*Width*Thickness) 

Material - natural Latex
Band circumference - 2080mm (continuous loop)
Recommendations:
Red - Stretching & mobility exercises
Black - Light resistance training (arm curl, shoulder press, push ups)
Purple - Resistance training (squats, deadlift, upright row)
Green - Pull-ups (body weight between 45kg - 90kg)
Choosing the right band depends on your level of strength and weight. 

Please view our pull up and exercise guides in the photos section if you are unsure which band to purchase.