Yes, there is, but it is not effective enough. I am satisfied with the insert and the sound insulation. I had no problems while studying. It is necessary to keep the sound a little loud outside. I recommend it as price performance.

The IPX5 specification can be found here: https://www.poly.com/no... At the very bottom, this item (213572-99) is listed as a product variant. According to these manufacturer specifications, I assume that the IPX5 certification should also apply to this item. We do not have any further information on this.