Here’s a pretty rare goody: Right now the President’s Day sale is on at Gap, and that means they’ve got tons of markdowns on the site, already, plus you can use coupon code PRESDAY to take another 20% off even sale items and get free shipping on any size order. But, if you’re buying something already on “regular” sale (meaning, not marked down just for this event; look for items with prices ending in .99 or .97), you can also use coupon code EVENBETTER for another 30% off!

Now—I know math is complicated—but this does not give you an extra 50% off sale prices, because you get one discount and then the other, so not the full 50%. But it does come out to around 44% off, and that’s still pretty good. Some of the sale items in Kids/Baby are ridiculously cheap when you stack the codes.

Want to shop some of the other Gap gamily stores? Old Navy is automatically taking 30% off your order, Banana Republic is doing an automatic 40% off, and even we-hardly-ever-do-sales Athleta is doing an extra 20% off sale items with coupon code EXTRA20. Bear in mind that all four sites share a basket, so if you can’t get up to the free shipping threshold elsewhere, grab a pair of toddler socks from Gap, use the codes, and your whole order will ship for free.