Sennheiser HD 400S wired Headphones with microphone - Black

The headphones met my expectations in terms of sound quality. One downside is the size, which is really big. It is also heavy on the head, slippery and painful on the earlobes after prolonged use. What's more, I still haven't paid for it as it should normally have been paid for in 4 instalments with other items, so I received a separate invoice....