Axil LLC X-Pro In The Ear Plugs made of Polymer with Black Finish & 19dB (Silicone Tips) or 29dB (Foam Tips) for Adults 1 Pair X-Pro Plugs are made from soft, hypoallergenic, medical grade polymer. Its low profile design allows you to keep them in place while wearing a mask, helmet, hat, or while using a phone, headphones or supplemental hearing muffs. X-Pro Earplugs are washable and reusable to help you avoid the hassle and extra expense of constantly having to replace disposable earplugs.