Old Navy coupons to stack w/ free shipping?

[nabigus]

My favorite shorts for ds are on sale, and I want to stock up. Anyone know of any % off coupons that would stack with their back to school coupon for free shipping?

(It's the hybrid shorts--wear like iron, not bulky, elastic waist--in case someone needs good plain shorts: http://oldnavy.gap.com/browse/product.do?cid=26638&vid=1&pid=631899)

Thanks!

[Pennylane]

You can sign up for their email list and they will send you a code for $10 off a $50 purchase that stacks with the back to school coupon.

Ann