These ProGuard Custom Variphone Ultra Lin-Ear Music Ear Plugs uses the latest in ear plug technology to deliver a state of the art protection whilst maintaining quality of sound and even enhancing the listening experience. Manufactured from soft, medical grade silicon, the ProGuard Variphone Ultra Lin-Ear has a choice of three attenuation levels (15, 19 and 22dB) and offers a brand new, elegant design that incorporates an open air passage to the ear, minimising the occlusion effect. This also keeps the ear well ventilated for maximum comfort. Due to the nature of the products being custom made they are non returnable and non refundable. Only available in the UK.