That's interesting Karina. I have checked 5 Woolworths stores here in Perth and Woolworths online shop and they all start at size 4 and only have sizes 4, 4+ and 5. I have looked in 2 Coles and couldn't find them! I might ask the grocery manager at a Coles if you saw them there. I even tried the helpline number on the nappy packet but there has been a recorded message there for 2 weeks soI gave up. Glad to hear that they 'perform' well!