Von Zipper Plimpton Sunglasses. A blue star cadet turned esteemed member of the scientific community. The Plimpton explores interests as diverse as oceanography, aviation, and the wish to breath under water.100% UV protection. Base 6 spherical lens. Impact resistant polycarbonate lens. Nylon grilamid/metal combo frame. Optical quality alloy temples and nose bridges. Stainless steel optical hinges. Imported.