If Mermaids Could Sip The Day Away Chances Are They’D Be Using These Coasters. Perfect As Summertime Party Favors These Drink Floats Come Designed As Pretty Pink Shells. Whether You’Re Hosting A Mermaid-Themed Birthday Party Or A Luau You’Ll Want To Stuff These In Goody Bags Or Inflate And Set Sail In The Pool As Party Décor. No Shell-Ebration Is Complete Without These. Each Vinyl Coaster Fits A 12-Oz. Soda Can. Inflated 8 3/4 X 9 3/4.