LOONBALLOON 1960s Balloons, 18. inch GROOVY LOVE AND PEACE SQUARE 2 pcs, ccent your themed party with this 18in. square shaped Groovy Love And Peace Square foil mylar balloon. The perfect balloon for your party, this 18in. party balloon is great for setting the scene! This balloon includes a self-sealing valve, preventing the gas from escaping after it’s inflated. The balloon can be inflated with helium to float or with a balloon air inflator. Balloon arrives uninflated. 18in. Groovy Love And Peace Square Balloon