The foil balloons and “happy birthday†letters are easy to inflate, but with a balloon inflator. It would take forever to do it manually. The quality is good and looks very nice. Unfortunately, the letter “P†in Happy Birthday burst as we were inflating it. Perhaps we put one extra pump of air. As there was no time to get another set, we had to substitute the letter “P†with a fish balloon. Please be very careful while filling them with air.