Both from the Aztec Collection (which apparently is only comprised of these two pillows):
The square Xtec Pillow is 18", $35 INCLUSIVE of the insert and ships free. The lumbar Diamond Southwest Pillow is $32 INCLUSIVE of the insert and ships free. This is a stylish deal to be had, folks. Both should likely be purchased and mix and match away with what you have now.
And I'll be Capt. Obvious that new pillows are the perfect way to usher in Fall and spice up your current look and these are oh-so warm and moody. Do it!