Any condition resulting from incorrect or inadequate maintenance or care is not covered under the SYB lifetime warranty. However, SYB Air Tubes Headset uses standard rubber earbuds, so you can easily find rubber earbuds that fit your SYB Air Tubes headset online.
SYB Lifetime Warranty: https://www.shieldyourbody.com/warranty-terms/
If you have any additional questions, reach out to our customer service team at hello@shieldyourbody.com.
PS: Here's how to put new earbuds on SYB Air Tube Headsets: YouTube Video.