Say 'Well Done' in a big way with our congratulations balloon - the addition of handmade chocolates will make the lucky recipient feel extra special too. Balloons in a Box At 18" wide, our fun balloons are delivered inflated with helium and with a weight inside a special sealed box, ready to surprise the lucky recipient! Every balloon gift also carries your unique message. FREE Delivery We'll deliver this gift for FREE by Royal Mail - in our experience, 95% of postal deliveries will arrive on your chosen date, however on rare occasions some deliveries may arrive on the next working day. Do you need a guaranteed delivery date? Upgrade to courier delivery during the order process - order by 4: 30pm for delivery tomorrow! Find more delivery information. Good Housekeeping Recommended A panel of Good Housekeeping readers tested all aspects of our service and we're now Good Housekeeping Reader Recommended! Find out what they thought here.