Please could someone explain to me how tops like this one www.mamaway.co.uk/index.php?main_page=product_info&cPath=4_32&products_id=153&zenid=a46c5f7067a1aa56 391615d6df010ba5 work as I can't seem to work it out from the pictures I have looked at.
Also, are they a good buy or just another gimmick to make 1st timers like me part with their money