Sennheiser PXC300 Foldable Noise Canceling Supra-Aural Stereo Headphones- 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.