16" letter balloon kit- happy birthday. Happy galentines day 16" letter balloon banner kit. Listing includes: self-sealing 16" letters, straw to manually inflate balloons, string for easing stringing. Balloons do not float with helium air only, balloons are shipped flat for self-assembly, balloons have tabs on the top and bottom for stringing or tying, balloons can be re-inflated for reuse. Length: 10, weight: 8.5.