Features: For those who suffer from serving. Many of the problems and causes of service are due to the instability of toss. Just like the "Serve is the life of the toss, control of the toss is important. Toss Up is a practice tool that gives you the control of the height of the toss. By practicing with Toss Up, you can wear your ideal toss! ■ Toss Up is perfect for those who are following this. For beginners to serve Do not rise up where the toss thought Poor rhythm to hit the toss again and again again Serve does not stabilize Toss will become aparted. By practicing with the Toss Up that has become a serve-yip, you can wear the ideal toss! Usage Precautions: Please read the instruction manual before use. Please do not hit this ball. Please make sure to raise the toss. If you throw it hard, it will bounce back and hit your face. Please do not use this product for anything other than practice for tossing. Make sure the safety of your surroundings. Please make sure the string is attached to the band and ball before use. Wear the band on your wrist correctly Please avoid using this product by a single infant. Please keep this product away from fire or high temperatures.