Mens Socks - Certified PainQualifying for certifications can be a nuisance for certain entities they're often restrictive, cost prohibitive, and sometimes they miss the point. But not Pain in the Ass. That's one label that's given out fairly, freely, and often. Men's shoe size 7 12. 50% nylon; 47% combed cotton; 3% spandex. 1% of the sale of all Blue Q socks goes to supports the humanitarian work of Doctors Without Borders.