The ear inserts fit securely and comfortably, without needing to be uncomfortably pressed into the ears, and they rest on the ear contour for even more secure hold. They stay safely and comfortably in the ear while jogging and during other sports activities. The patented design creates a gentle seal that contributes to noise reduction across the entire frequency range. There are no pressure points due to the large surface contact with the ear. This ensures consistently high sound quality. Made from durable, washable silicone.