Includes five exercise resistance band strengths -0.35mm(5-10lbs), 0.5mm(10-15Ibs), 0.7mm(15-20lbs), 0.9mm(20-30lbs), 1.1mm(30-40lbs). You can combine them by stacking or knotting together to give many different resistance levels for your workouts.This elastic YOGA band has 5 colors to choose from (accept color custom), but different color has different thickness and tension. Great for sports training, free body warming up before exercise. Green: 5lbs. to 10lbs. Blue: 10lbs. to 15lbs. Yellow: 15lbs. to 20lbs. Red: 20lbs. to 30lbs. Black: 30lbs. to 40lbs. Default price is for 1pcs, not for 5pcs pack. Drawstring bags can be offered but NOT INCLUDED. Inquiry please ALSO remark tension requirements and consult for price details