Heart Balloon Lemon Satin Luxe Foil Balloon Round - Empty. This beautiful foil balloon in a satin-luxe look is perfect for all events. The elegant metallic shimmer of this balloon adds a special touch to your occasion! Size: 43 cm when unfilled. Material: coated foil balloon. Suitable for air and helium fillings. Helium requirement: 12 liters for 1 balloon. Max. floating time: 5-10 days with helium / several weeks with air filling. Load capacity: approx. 2-4 grams. Tip: You can refill with breath through the adhesive valve using a straw. This will restore the balloon's full buoyancy. Give it a try and extend the floating time! Valve: integrated automatic sealing valve (inflate - press valve - done) can be repeated several times.