My new hats

I bought a new hat today. Actually, I bought two. I am pretty stinkin excited about them. Normally I don't like hats. They make my hair do funny things, but it is cold here, and if you didn't know, your body loses a lot of heat through the head. One of them is brown cord material with lightly colored stripes scattered for highlights. It is my favorite. I got it on sale for like 1000 yen (around $8 for you Americans... Other currencies, sorry I have NO clue). It was such a good deal that I decided to buy the other one also. It is dark green on the outside, with a red and gray plaid design on the inside. My question is: how can you tell if a hat is reversible? I know that the first one isn't; it has a tag on the inside. But the second one has nothing... How is a fashion non-savvy girl supposed to know??? Sigh. Just another issue for my already distracted life.