XIANQI Durable material: these noise cancelling ear plugs are made of soft silicone material, lightweight and comfortable to wear, and have a nice sound insulation effect; They can be washable and reusable, you just need to clean them regularly and leave them dry naturally for future uses Sleep well: these silicone ear plugs for sleeping will create a barrier to reduce noise, which can help you achieve deeper REM sleep; Comfortable for light sleepers to wear all night or day if you work night shifts Applicable occasions: these sound blocking earplugs can reduce the noise pollution after wearing properly, suitable for all kinds of occasions, such as construction site, factory workshop, snoring, shooting, swimming, transportation, airplane, study room, gym and dormitory color: blue Delivery Quantity: 6 pairs