EQ Seals Balance Pro Earplugs Originally developed under the brand name Sorky, these earplugs are perfect for anyone wanting a waterproof seal which doesn't completely block your hearing. They achieve this by putting a waterproof, breathable membrane inside the soft silicone ear plug which you insert into the ear. FEATURES: Sympatex membrane 100% waterproof seals 100% windproof Optimal breathability 300% elasticity Extreme physical resistance Optimal density, micropore-free Tested durability Functional barrier The EQ Seals Balance Pro is comprised of two key elements: The body The Sympatex membrane The body is made of medical silicone, a hypoallergenic, chlorine-proof, salt water-proof, water-repellent material that can withstand temperatures from -10oC to 60oC. The cup is designed to be placed just behind the first curb of the auditory canal, purposely limiting pressure around the wall of the ear duct (meatus), offering a secure fit, comfort and waterproof qualities. The extension rib helps when inserting and removing the earplug. The breathable and waterproof Sympatex membrane maintains the hearing and balance capacities of the user, whilst protecting the ear from the external elements. The EQ Seals Balance Pro includes an ergonomic applicator for an easy and safe placement of the protection in the ear, as well as with a handy carry tube on a key ring.