【 Ideal noise reduction 】These ear plugs are with high noise reduction rating (NNR) of 29dB, which can ensure your sleep quality, make you more concentrate on your work, and protect hearing in loud environment etc. You can enjoy pleasant quiet. 【 Upgraded material 】Upgraded super soft silicone material make the stems won't be too long or hard. Low-pressure and without any discomfort. Especially suit for side sleeper. You can lay your head on the pillow without worrying about the ends stick out. 【 Lightweight & Safety】 It's more flexible and comfortable to deeply insert it to ear canal. Good breathability and safe material, it won't make pressure to hurt your ear or expand your ear canal.