What is the opinion of Reddit about the
Sennheiser PX 200 II Closed Mini Headphones with Integrated Vol Control (Black)?

The Sennheiser PX200-II are nice closed back on ear headphones, that are the comfortable big brother to the renowned PX100-IIs, and they also to be cheaper across the pond than in the States: http://www.amazon.co.uk/Sennheiser-PX-200-II-Headphones/dp/B002VPDOHS/ref=sr_1_1?&ie=UTF8&qid=1435699506&sr=8-1&keywords=sennheiser+px200

Maybe the Sennheiser PX200-II? They are portable, and semi-closed, so they block out some sound, but not all.
http://www.amazon.com/Sennheiser-PX-200-II-Headphones/dp/B002VPDOHS