The design of the Spain flag is outlined in the Spanish Constitution of 1978. As described, the flag should have 3 horizontal stripes of red and yellow with the yellow stripe being twice the size of each red stripe. The coat of arms should appear on the left third of the yellow stripe.
Look for Made in USA for American made flags. The Spanish flag can be found with the coat of arms on it or without the coat of arms. It is a red and yellow flag.