Innovative ergonomic design, developed specifically for the Japanese ear canal. These uniquely shaped earplugs with an arc conform to the shape of the ear canal, providing a comfortable fit that won't fall out during sleep. Improved fit and increased noise reduction, without causing pain in the ear. Gently pull your ear to widen the ear canal and insert the earplugs. Excellent soundproofing performance, suitable for a wide range of environments. ✅ Case: White ✅ Earplugs: Black/White (See photo ⑤) Thank you for looking! ☘️ We also have other new and unused items for sale! ☘️ ~ Please take a look ~ #yonkoROOM 053 Yumi 516-9811