This might seem like an odd suggestion, but if you’re using an iPhone, then they’ll work: get a pairm of Beats Solo HD’s off eBay. They don’t block background noise too much, they sit neatly ofer the ear and don’t bleed sound too much, they fold up, and they have replaceable cables, ear-pads and headband cushion. They do sound crap, though.
However, there’s an app for that; EQu, which lets you set up custom acoustic curves to tweak the sound.
I bought a pair, original packaging, with receipt, in imacculate condition, eighteen months old, for £70, inc postage, and using EQu they sound brilliant, I’m chuffed to bits with them.
Without the app, they sound muddy and lacking in detail, basically music comes from World of Doof.
Worth considering.