People mentioned few things about the seat pitch on Yclass. Well, it IS very tight. I'm 5'6" and weigh less than 135lbs (quite small figure), but even with my size I feel very "compacted" in the Y-cabin of CX. And as someone mentioned, their Airbus fleet seems to have tighter seat pitch than the 747s. This is mainly due to the PTV, I would say. The TV is located right behind the head rest in the seat in front of you, so this kills about an inch of space.