Adidas provided 9 sock size samples you saw during sample nights. Soccer.com does not carry inventory of all 9 sock sizes for custom uniform orders. We are working to change that going forward.
As you can see from the store, at this time only adult sock sizes are available. The club has ordered youth sizes KL, KXL, KXXL.
If your son/daughter tried on socks and is smaller than a XS (we expect all 2015 teams and younger), please order the XS now and contact your team manager. We will proactively be working with the younger teams to ensure everyone has socks that fit!
For reference my son wears a size 4 (B15) and my daughter wears a size 1.5 (G16) and they both fit perfectly into the KXL sock.