AE 40% off + 20% off clearance + free shipping with any swim item whoooo

On SlickDeals:

American Eagle is offering 40% off online(excludes Gift Cards.), plus additional 20% off the clearance, Free shipping over $100
40% off coupon : 64827797

I don`t know how you get the 20% additional on cleareance + 40%?
Okaii Updates: The 20% applies automatically when u add the item to your basket and 40% works on clearance as well =D. This is baaad, it's raining outside and I still find an excuse to shop!

Also, to get free shipping you have to add something from the swim wear collection I think.