MOTTDAM Clip on Sunglasses, Mens/Womens UV400 Flip-Up Polarised Sunglasses[2-Pack] - Convenient and Secure Fit over Prescription Eyeglasses Ideal for Driving and Outdoors - Day+Night Vision Premium Quality Lens: Made from extremely strong and durable polycarbonate,Conform to BS EN 1836:2005 + A1 2007 & EN ISO 12312-1:2013. Convenient to Put on: Easy one hand secure clip on to and fit over prescription eyeglasses. Build to Last: Constructed by precision engineered spring bridge ,ensures smooth, solid and durable flip up that won't break or stick. Night Vison Lens In: Unique night vison yellow lens features optimal night viewing. UV400 UV Blocking Polarized Lens: Filter out UV radiation from the sun, preventing glare and reflections or other eye damage. Perfect for driving and outdoor activities.