Increase the resistance of your body-weight workouts with the SKLZ Pro Bands Medium. These portable workouts bands help you increase strength, flexibility, and stamina. Use them to warm-up joints and muscles for strength and flexibility training, as well as improving lateral speed and forward acceleration. When you've reached a plateau and your workout routine becomes dull, switch it up and raise the resistance with the SKLZ Pro Bands Medium! Portable and proven way to build upper and lower body strength. Provides resistance to help increase lateral speed and forward acceleration. Perfect for adding tension to common exercises or assisting pull-ups and dips. Available in four weights for varying degrees of dynamic tensions. Built to withstand your most intense workouts and routines..