The Original Xertube can be used to isolate targeted muscle groups through a full range of motion to strengthen and tone your arms, chest, shoulders, and back. This versatile and very convenient tool is perfect for group exercise, personal training, and even travel. Heavy-duty, high quality tubing resists tears and abrasions. Total-body conditioning Isolate target muscle groups through full range of motionMeasurements: 50" Resistance Level: Medium, +/- 30 pounds.