Using your ATTENU8 ear plugs is easy. First, choose the right size of memory foam tip that fits your ear comfortably. If you're a side sleeper, you can attach the bottom foam tip. Roll the foam tip between your fingers to compress it, then insert it gently into your ear canal and hold it in place until it expands. To keep them in good condition, clean the foam tips regularly. You can replace the foam tips every 6 - 8 weeks as they start to wear out. Avoid getting the ear plugs wet as much as possible, and store them in the provided packaging when not in use. This will keep the foam tips from getting squashed and protect your ear plugs for long - term use.