【Excellent Performance】These in-ear earphones offer superior sound isolation and filtering, protecting your ears from noise. The noise reduction level (SNR) of these earphones is 35 decibels, effectively reducing noise. They provide a comfortable, private space in various situations, such as during commutes, naps, or reading on a plane. 【Comfortable Fit】The unique triangular design ensures these earphones fit your ears as well as possible, combined with carefully selected soft materials, providing a relaxing experience for your ears. They are designed to not slip out of your ears. 【Multiple Sizes Included】These earphones come with a total of four different sizes of ear tips, all stored in the same product. This minimizes the stress caused by size incompatibility, providing comfortable sleep and relaxation. 38-50-2.5 Although unused, the product has been opened once for inspection. Please purchase only if you understand this. #na★★★★