Epoch Eyewear Epoch Primo TR-90 NZZ Frame Sunglasses 2 Color Choices. EpochPrimo. The Epoch PRIMO is equipped with Grilamid TR-90 NZZ frames. Using the highest quality TR-90 makes this style not only extremely lightweight but extremely durable. Featuring inlayed rubber that insures a perfect fit, the Epoch PRIMO frames and lenses meet or exceed ANSI Z87.1 impact standards for complete safety and durability. Comes with an Epoch hard case and limited edition Epoch microfiber bag. Color: Black/White Frame with Navy Blue Mirrored Lens or Lime Green/Royal Frames with Mirrored Navy Blue Lens. EpochPrimo