This is the entry for the 2015 Pig & Whistle ANZAC day NZ S1nglespeed Championship. By purchasing this product you have entered the event. The entry covers the race, the t shirt, the breakfast, and a bunch of other stuff we haven't thought of yet..
When you make your selection don't worry about the quantity of t shirts showing zero... as long as you pick your size/gender, you will get the right shirt.
If you are entering from outside New Zealand - Good on ya! But also, please make sure you are in the correct site (look at the top banner there is a widget there that shows you). That way you can enter your correct address.