Used for both in- and outdoor use, they're a bit clunky but certainly as portable as any other pair of headphones. Clarity and general quality of sound are really good for its price, and the build quality is one of its strong points (though, be careful not to drop them, as the wood might crack or scuff). While fairly expensive, their quality and comfort are some of its most compelling features. While the headphones themselves are straightforward, pairing them with an AMP is recommended as they're based on the previous RP-series from Fostex, to get the most out of them. If you're just looking for a pair of stylish headphones, these are certainly gonna turn some heads.