Sorry, no longer available. Get a free sample of two Pull-Ups in the size you need from Costco.  This sample is available for everyone, not just Costco members (leave the membership number blank).  You get to select boy or girl, size 2-3T, 3-4T, or 4-5T.  And if you haven’t already gotten it, get a Pull-Ups Potty Training Success kit too.
Costco offers lots of samples by mail to both members and non-members.   Check out all of the current Costco sample offer