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