DescriptionThe mushroom earbud can gently lock in the user's ear, securing them stay in place during a vigorous activity. You may hear radio transmissions clearly and also be aware of what is going on around you at the same time.Features- Color: White. - Material: Silicone. - Size: 1.40X1.30X1.30cm/0.55X0.51X0.51 inch. - For use with most coil tube audio kits, either left or right ear. - Stretching is good, the earbud is not easily deform faded and durable. - Stays secure, doesn't block the ear canal, even during vigorous exercise. - Premium material makes our earbuds alternative to any acoustic tube earbuds and comfortable enough to forget it's there. - It is manufactured with professional technology to ensure the of the product and can work for a long time.