Resistance Bands are lightweight, elastic bands for muscle stretching and strengthening with two tension levels: Medium/45 lbs. and Heavy/65 lbs. Resistance Bands can be instrumental during recovery to increase strength and flexibility. Bands can be conveniently used wherever you are, at therapy, at the gym, or at your desk. Two resistance intensities (medium and heavy) will help you safely mobilize joints, stretch according to your comfort level, and help you gauge your flexibility improvements. Latex-free. Pack of two, each measuring 58″ long x 6″ wide.