Elastic belt, 30 Jin is very heavy. The resistance of elastic belt is usually marked in pounds or kilograms, and 1 pound is about 0.45kg A elastic belt can provide 30 pounds of resistance after being folded, that is, the weight of 13.5kg, which can be used for the most advanced strength training. It's heavy and difficult to control. Elastic belt is a physical training tool made of natural latex, which is convenient to carry and use, and very effective. /kloc-was first used in the field of fitness more than 0/00 years ago, mainly used in men's strength training and women's self-cultivation programs, and later widely used in the field of rehabilitation training. Elastic belt can be used as a fitness training tool at home or on business trip, with the rhythm of music for aerobic training, rapid self-cultivation, strengthening cardiopulmonary function and improving posture.