foot locker, they have up to 4xl which is knees if your around 6 ft and they may or may not have sweaters, they seem to have like a few at the store near me which were random sizes like a medium and then a 3xl so idk what they stock in those
At my local hobby lobby they have just solid colored t shirts and sweatshirts for like 5 bucks...bought a 3xl and it fits pretty good...not sure what the Langley was though...they had sizes up to like5xl though