Mini Air Fill balloons are designed to fill with air only and secure to a cup and stick. Extremely popular at floral shops, grocery stores, adding to gifts/gift baskets, and accenting large scale decor. They are even popular for adding to balloon arches and garlands to add extra flare to the theme. A typical sealing technique is to inflate the balloon and pinch the neck to keep the air from escaping. Then using a heat sealer above the point you are pinching the neck to complete the seal. After that the neck of the balloon can be wrapped/secured to a air fill balloon cup, and then attached to the stick. Air fill balloons are not self-sealing and ships not inflated. Cup and stick not included.