At its core, all exercise involves resistance. The Pro Bands give you all the benefits of resistance—increased strength, flexibility and stamina—in a portable size. Use them to warm-up muscles and prime joints, for strength and flexibility training and to help increase lateral speed and forward acceleration.SKLZ Pro Bands are an easy way for individuals to add resistance to their exercises and workouts. These lightweight training aids provide all the benefits of resistance – increased strength, flexibility, and stamina. Through drills, exercise bands can be used to help increase lateral speed and forward acceleration. They’re perfect for adding tension to common exercises like lunges and assisting pull-ups and dips. Built to withstand your most intense workouts and routines, the Pro Bands are available in four weights for varying degrees of dynamic tensions. Use them at home, at the gym, or even on-the-go, Pro Bands are the perfect training tool.