I used these for about 20 minutes (using the M size ear tips, other sizes completely unused), but they didn't fit my ears, so I'm selling them. There was no dirt on them to begin with, but I have wiped them down simply with a wet wipe. Shipping will be done quickly via Yu-Packet Post Mini. Please use them for sleep, study, soundproofing, and noise reduction. [Product Name] "【Germany Red Dot Award Winner】Earplugs for Sleep, Doesn't Hurt When Turning Over 【Certified Hearing Protection】DJcong Complete Sound Insulation, Snoring Prevention Goods, Use with Hot Eye Mask, Relaxation Goods, Sleep Aids, Noise Canceling Earplugs, Earmuffs, Soundproofing, Children, Adults, Hyperacusis, Sleep, Good Sleep, Deep Sleep, Study, Concentration, Gray" For those suffering from snoring, noise, and car sounds. The DJcong sleep earplugs, 【Germany Red Dot Award Winner】, are 【Certified Hearing Protection】 that combine a stylish design like earphones with complete sound-insulating noise-canceling performance. With 【SNR value 26dB】, they effectively block out snoring from neighbors and outside noise. The 3D ergonomic design that doesn't hurt your ears & ultra-flexible silicone material provide zero pressure even when you turn over in bed. JIS certification is also approved, so safety is guaranteed! Comes with 4 sizes of ear tips that can be used by children to adults. They are overwhelmingly cost-effective compared to disposable ones, and can be washed, making them hygienic. Versatile earplugs perfect for work, study, travel, saunas, and live music! Because of the stylish design that makes people not notice "Are you wearing earplugs?", you can use them casually even when you're out and about.