This is an unwashed Champion Reverse Weave sweatshirt from the 1960s/70s. Easily distinguishable by the large 4″ cuffs at wrists and bottom. The wide band at the hem of this sweatshirt keeps the fabric bunched here, but it would eventually loosen up after wear and wash. This era of Reverse Weave tags were color coded by size. Blue seen here is small. Red Medium and Large, Gold XL, from what I have seen. This example still has original sales tag from the university book store. Presumably University of Northern Colorado as it was found here in CO.