Ideal to wear more than 8 hours a day

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Size to choose? : ? M ， L

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M : suitable for underband 66-80cm

L : suitable for underband 80-88cm

*Color might be slightly difference from the display.
** Buyer must be careful on the measurement section as goods sold are NOT returnable.measurement in cm ， and (+，-) 2cm
***Please choose your size ， color and write in Notes/Instruction when u checkout