All the extras you’ll need is boiling water in a container, a spoon (or a mid length gas tube and block), timer, and a mirror, if you do it yourself.
Attach back plug and correct size silicone tip to custom mold. DON'T USE FOAM TIPS FOR MOLDING
Place your earplugs in the hot water for 5 minutes
Take it out
Give the earplugs 30 seconds to cool.
Insert the mold into your ear and firmly press the back plug making sure the silicone tip fits snugly into the ear canal.
With the pad of your finger, press the mold to fill the concha (bowl) of your ear.
While in an ear, let the mold cool for 5 minutes.
Repeat for the other earplug.
Make sure to test your Decibullz in progressively louder environments. It’s good to start out with a clap. Sounds should be hollow or muffled. If they aren’t sealed well or are uncomfortable, you will need to re-mold, place the mold back in hot water for 5 minutes, and repeat steps.