The HD 280 Pro is Sennheiser's most significant closed, around-the-ear headphone to be introduced in years. Designed to exceed the demands of the professional environment, the HD 280 Pro boasts extremely robust construction combined with the sound quality, modular design and aggressive noise isolation the necessary in the field. The unique collapsible design, combined with swiveling ear cups, offers maximum flexibility in any application. /gt; /gt;These rugged, comfortable headphones are designed for professional monitoring applications. Features include single-sided coiled cable, rotating ear cups and up to 32 dB noise attenuation.