Training Aid Swing Elbow Trainer Posture Brace for Beginners Training with Tok-Tok Sound Notifications

[Application]:Through Tik-tok sound to make ers discover their left arm curving mistake, so as to keep the left arm at a straight position, therefore it can gradually form effective and desired hitting; Fit all ers or instruction, especially for beginners [Tik-Tok Sound Prompt Incorrect Posture]: Built-in alarm device which made of special material makes a Tik-Tok sound immediately if you bend your elbow when swings ; It prompt you that you are not in correct posture, you should adjust posture and keep left arm on straight [Adjustable And Easy To Wear]: Strong strap and buckle make it adjustable, easier to put on and take off; The plastic thick plastic buckle will not scratch you skin like other thin metal buckle; It fits most people's arm, elbow circumference up to 33cm [Breathable Fabric]: our training aid swing is made of quality nylon breathable cloth + webbing + strap, and lightweight; It will not add you pressure