Use all year around. Bubble Tree Original Refillable system is not just safe for the environment but safe for you too. Get rid of one time use plastic bottles. Reuse! Refill! Recycle and Share! This item features 2 Liter of eco-friendly superior bubble solution. This can also be used with our other featured product so Grab N Go and take this to your next celebration, event or just have fun with your family and friends!FEATURES2 liters of Eco-friendly non-toxic superior bubble solutionEnough to refill 17 – 4 fl oz Bubble Tree aluminum bottlesDispensing refill spout included on back to refill bubble bottleOriginal Bubble Tree patent pending design and systemsMade from sustainable packaging that is 100% recyclableCan be used to refill other bubble toysEasy grab handle on back every of box