For Smith Optics OTW/Aegis/Pivlock Echo.
The interchangeable Rx system is designed for both the Outside the Wire (OTW) goggle and Aegis eyeshield. A single, integrated Rx carrier can be used in either product. The Smith Elite Rx carrier is engineered to accommodate corrections up to +/-11 diopters. The kit comes with everything you will need to bring Rx into your OTW goggle or Aegis eyeshield.