If you like this product, we advise you add it to wish list now, so that we will inform you first once it has a discount. After-sales Service All items from Malihome support 30 day money back guarantee. If you have any question or advice, please feel free to tell us, you can get reply in 24 hours. User Guide Make sure the "V" shaped side of the mouthpiece is facing down Insert the mouthpiece and gently place tongue inside the opening until you feel your tongue is touching both sides of the silicone walls. Use your thumb and forefinger, gently squeeze the silicone bulb repeatedly to create suction. You will begin to feel the device pulling your tongue inward until it is attached securely. The fit should be just tight enough so that the device is attached securely but not so Tight that you are feeling pressure on the tongue. Experiment until you find the perfect fit for you. Finally, to release the mouthpiece squeeze on the bulb which will release all suction and simply pull it out.
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