Innovative ergonomic design, developed specifically for the Japanese ear canal. These uniquely shaped earplugs have an arc that conforms to the shape of the ear canal, providing a comfortable and secure fit that won't fall out during sleep. Improved comfort with no pain in the ear canal, and enhanced noise reduction! 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