I answer to your question,
The Clarity aloft has squidgy ear plus, a bit like foam earplugs. They have hole in the middle for the earphone and expand to fill your ear so I expect they will firt anyone.
Line input is not needed you just use the headphone output. You need a 3.5 mm male to male lead which you can get from Maplin for about £3. Maybe elsewhere.
These work very well.