Product description
If there is any oil on the surface, you can rub it gently with laundry detergent.
It is recommended that you change it every 1-5 days to avoid bacterial growth caused by not changing it for a long time.
Roll the earplugs into thin strips with your index finger and thumb.
Lift the ear upwards and rotate the earplugs into place.
Hold the earplugs in place with your index finger for 30 seconds and wait for the earplugs to fully expand.
Product Name: Bullet Foam Earplugs
Specification: 0.49in * 0.94in (manual measurement error, please prevail in kind)