Easy to use, equipment seems durable enough to be stepped on and stretched.  This kit is good for beginner to mid-intermediary fitness level.  I'm a 135 pound woman who lifts at the gym 3-4 times a week.  This would be a helpful kit when traveling and there's no gym for a mild warm up.  I would not count on using these resistance levels for folks who are more advanced.  You may have to purchase supplemental bands that have higher resistance for more of a workout.