Material: high quality silica gel \ product does not contain BPA Free;
Function: both sides of the product can press sound, reduce pressure and interact;
Size: square 58 * 58 * 14.5mm
Material: high quality silica gel \ product does not contain BPA Free;
Function: both sides of the product can press sound, reduce pressure and interact;
Size: square 58 * 58 * 14.5mm