Premium Quality Stackable Resistance bands with 5 Different Fitness Level
√UP to 150 LBS: You can use these stackable bands together, the maximum resistance level can up to 150LBS.
√BLACK (50 LBS): High resistance level can meet your daily stretch need back or arm or legs.
√BLUE (40 LBS): Medium to heavy resistance can well suit high stretch training.
√RED (30 LBS): Medium fitness level to exercise your arm or shoulder training.
√GREEN (20 LBS): Light to medium resistance level is perfect for warm up
√YELLOW (10 LBS): Light resistance level is really suit for rehabilitation.