As is often the case for these kind of deals, only the extremes at each end of sizing available. Size XS (8) or 3XL (20) Size XS can be a good one to go for if you have kids as well though. Sale is via Offtheback.co.nz. There are some other ridgeline deals also but this one is the biggest discount. Shipping was $7.99 to me, but that could differ to where you are, and it looks like that's a flat rate if you buy more.