Material: ABS+plastic frame Visible light perspective rate: greater than 42% Lens color: tea gray Specification: round, square Package content: 1*3d glasses clip 1.Perfect for Prescription Glasses Wearing two glasses in the cinema is uncomfortable and tiring. These clip-on glasses have very light weights and cause no discomfort for your head. 2.Easy and Convenient to Use The glasses can be easily clip onto your prescription glasses. You can flip up and down the lenses by your hand while wearing them. 3.Good-Quality and Portable The clip is sturdy and the lens is durable. You can clean them just like your prescription glasses. These are passive 3D glasses that don't need batteries. And, each one comes with a portable clear plastic case Fits nose tipWith a new generation of man-machine engineering micro-clamp,make our 3D clips are connect to the same way as the eyeglasses we wear,and make our clip and our lens keep highly laminating,so they 100% don't interfere with the vision.It's light enough and it doesn't interfere with vision,we even feel like we're not wearing clips.