Introducing Pixel Buds A-Series. Everyone's ears are shaped differently. We scanned thousands of ears to make Pixel Buds A-Series as comfortable for as many people as possible. Eartips in 3 sizes ensure your earbuds can be customized to best fit your unique ear shape. Each earbud’s stabilizer arc gently tucks in the ear, and together with the soft-fit eartip, helps Pixel Buds A-Series stay put securely and comfortably even when you’re exercising.