Dear Valued Customer,
Please note, there were an isolated number of carrying cases packaged with these models that had a small amount of adhesive residue remaining on the inner pocket after manufacturing which may result in mold. Analysis from the testing of the residue by an external laboratory confirms it is unlikely (low risk) to affect human health. For consumers who have purchased this product, and feel they may be impacted, please contact Panasonic at CustomerCareEsc@us.panasonic.com and we can assist you with an exchange of your headphone and carrying case at no cost.
Contact information: Email: CustomerCareEsc@us.panasonic.com