Portable & Convenient-you Can Use It at Anywhere No Matter You Are at Home, Work, Walking, in the Car or Doing Sports. It is Easy to Take Along in a Pocket or to Pull Out of a Desk for Workday Use. Great for Daily Exercises to Improves Muscle Strength, Prevents Stiffness & Relieves Joint Pain & Soreness. Ideal to Increase Your Hands Strength for Climbing, Tennis, Bodybuilding, Golf Etc.3 Levels of Resistance (40 Lb -50 Lb - 60 Lb) Which Helps You Relieve Stress, Focus, & Train Hands & Wrists. Improve Your Overall Grip Strength Step by Step, Which Can be Used by Anyone From Teenagers, Ladies, Men or Seniors.