Hank Green's 2D-Glasses: Turns 3D movies back to 2D Lightweight ABS plastic frame, fits on most! Guaranteed to convert 3D viewing into 2D at the Cinema Mitigates eyestrain, headaches and nausea associated with 3D technology Works with 3D movies at theaters or any place that uses RealD technology Also works with passive (cinema) 3D televisions, but not active-shutter TVs