●【Suitable For】The perfect circle pitcher training aid is great for basic mechanics or advanced pitching machines, portable and convenient using. ●【Great Training Aid】The perfect circle pitcher training aid is designed for developing the muscle memory for correctly pitching a softball. ●【Proper Size】The perfect circle pitcher training aid is with total length is 50cm/19.69inch, great to help the pitcher keep the bottom of the circle close to the thigh. ●【High Quality】The perfect circle pitcher training aid is made durable webbing material, durable, lightweight and comfortable touching. ●【Wide Applications】The perfect circle pitcher training aid is widely suitable for training fastballs, change ups, drop balls, screwballs, and curve balls, etc