Welcome to our store! 1. Lung Capacity Exercise: Breathing exercises with a blow ball can increase lung capacity by training respiratory muscles and increasing breathing capacity. 2. Educational: Let children understand that gas in motion can keep light objects in balance, understand the charm of physics, and cultivate children's interests. 3. Widely Used: The breathing exercise tool includes 2 foam balls, small in size and light in weight, which are suitable for home play, school use, and outdoor use. 4. Bright Color: The lung capacity training tool is made of safe and environmentally friendly water paint, and other parts are made of wood, not painted. 5. Safe to Use: The blow ball lung exercise is 360° safe, smooth polishing, without burrs, and will not scratch your hands, which is safe for you to use. Product Type: Blow Ball Breathing Trainer Material: Bamboo wood, foam Function: Cultivate interest, train lungs 1 x Blow Ball Tool 2 x Foam Balls Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, wrong quantity, etc., please contact us immediately and we will provide you with the best solution!