Pendleton has made national parks blankets since the early 1900s. But when we found out Pendleton made National Park socks, we couldn't resist. These go great with our National Park Foundation collab, in case you want to deck yourself out from head to toe (does anybody make national parks pants? If not, they should). Cotton/poly/spandex blend for breathability and a bit of stretch. Cushioned foot bed for year-round comfort.