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: