Adequate amount to meet your needs: Package contains 4 elastic baseball bands that can help you increase your arm strength, firing speed and flexibility, enough to meet your daily exercise needs and share with your family and friends4 Resistance Level: These baseball resistance bands come in 4 different colors and each color represents a resistance value, represents the black 20 pounds, is suitable for children under the age of 12, representing the blue 30 pounds, it is suitable for high school travel team, it represents 40 pounds, the green and university level and the university level and the red 50 pounds, the red 50 pounds, the red 50 poundsEasy to use: Resistance bands for shooters are in advance with metal fence clips and wrist headlines, you can apply metal clips to fences and railings to start your education and enjoy the exercise time, and the wrist headlines are comfortable and soft, puts less load on your wristRobust and elastic: These exercise bands for baseball are mainly made of quality latex tube material, is robust and reliable, good flexibility, breaking and abrasion is not easy to use, comfortable and useful, serves you for a long timeMultiple uses: For baseball training, arm band is not only for baseball training, but also for softball, basketball and volleyball training, fitness, yoga and sportsIt is ideal to serve as a gift for.