The SYB Phone Pouch is made up of 3mm thick neoprene with quality threading. It is durable; however, over time, it is possible for the SYB Phone Pouch threading to loosen. The shielding effectiveness will not be affected by this, and you will be protected from the EMF emitted by your phone.
If you have any additional questions, send an email to our customer support team at hello@shieldyourbody.com.