The Head Vortex goggles have a durable one-piece construction with injected liquid silicone for additional comfort & excellent fit. Their split silicone head strap has an easy auto-clip system to make adjustment quick & intuitive. The polycarbonate lenses have anti-fog & anti-UV properties. The Head Vortex goggles are a combination of 60 years' experience in aquatic eyewear production & attractive design with Italian flair: all this to provide you with the quality you will enjoy.