With promo code: 85624 for 20% off one item
Promo code: 86954 for 25% off total order
And promo code: 86959 for $1.99 flat rate shipping
I know it says only one promo code but I had no problem using all three.
Some sizes and colors are currently back ordered and not shipping until the 20th.
Full Zip version is also on sale for $4.79 with all the promo codes.