Resistance Loops 610*50*0.7MM

Resistance Loops SPECIFICATION. ·Size level1 610*50*0.7MM-Yellow,10-15lbs.
level2 610*50*0.9MM-Red,15-20lbs.
level3 610*50*1.1MM-Blue,20-30lbs.
level4 610*50*1.3MM-Green,30-40lbs.
·Made out of latex.
·Packing-4pcs per set,one set per color box.