When you receive your Isolate® ear protectors, you will find a pair of small, medium and large Earfoams (for the standard Isolate®) and extra small, small and medium Earfoams (for the Isolate® MiNi), which fit around the barrel of the product. Start with the smallest Earfoam and work your way up to the largest. Use the foam that is most comfortable.
It is crucial that the Earfoams are correctly seated on the Isolate® ear protectors and that the Isolate® ear protectors are correctly fitted in your ears.
Here is a short video that shows how they should be inserted: