What safety precautions should I know about wearing and storing the WH-1000XM4?

Because the headphones achieve a tight seal over the ears, forcibly pressing them against your ears or quickly pulling them off can result in eardrum damage. Do not apply weight or pressure to the unit for long periods, including when stored, as it may cause deformation. The earpads may also be damaged or deteriorate with long-term use and storage, and replacement earpads can be found through an authorized Sony retailer or at www.sony.com. (Page 1)