Hanes Men's EcoSmart Fleece, Pullover Crewneck Sweatshirt, 1 or 2 Pack

My boyfriend is 5 11 and is about 140 should I get a medium or large??

im 5'10 and 200lbs, what size should i get?

So are these a two pack? Customer comments below say NO.

Do these shrink in washer and dryer, and I am tall 5-9 woman so how is the lenght???