Sennheiser PXC300 Foldable Noise Canceling Supra-Aural Stereo Headphones (Discontinued by Manufacturer) Closed supra-aural stereo mini headphones with switchable NoiseGard active noise cancelling Ideal for air travel and noisy environments Patented Folding mechanism and protective soft case for storage and transportation Ultra-lightweight design with ergonomic headband, two point suspension and soft high-quality ring ear pads Transparent and lifelike audio reproduction due to duofol diaphragms with spiral embossing