Poor Used Condition: the item has been frequently worn and shows significant flaws/defects. Condition Guide. Under Armour. Girls Clothing. UK5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5. US6 6.6 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13.