34" silver number "18" foil balloon decoration these are fantastic for birthdays, anniversary"s and events. Make your party unique with the numbers you choose in huge silver foil balloons. You will get 2 seperate balloons 1 x number 8 and 1 x number 1 they both measure 34 inches the balloon can be filled with helium to float or filled with air to attach to any surface, it has a self sealing valve. The balloon will come flat and need inflating. Once inflated the balloon will stay up for over a week.