• Celebrate your 28th birthday in style with this party supply set. • High-quality rose gold balloons, difficult to burst and stay afloat for a long time. • Reusable Mylar balloons with self-sealing valve for easy inflation and deflation. • Inflation instructions: use helium or air. To make the confetti stick to the balloon, rub the inflated balloon with paper, wool, or carpet. Note: air-inflated balloons will not float. • The package includes: 40-inch aluminum balloons with the number '28', 16-inch 'Happy Birthday' banner balloons, 2 18-inch Mylar star balloons, 10 confetti balloons, and 10 latex balloons. • Product dimensions: 20 cm wide, 2 cm high, and 23 cm long.