This is a set of two Nakayoshi Color Balls and an air pump specifically for Puwa Balls, which are very commonly used in Puwa Ball baseball⭐︎ The air pump for Puwa Balls has a very small needle, and cannot be inflated with a general ball pump! Discounts will be actively considered for multiple purchases! Please feel free to contact us(o^^o) We will basically ship via regular mail, but we can accommodate other shipping methods if you pay the difference! These Nakayoshi Color Balls are made of durable PVC material and can be used for a long time. 【Nakayoshi Color Balls】 - Color: White - Quantity: 2 - Material: PVC (Polyvinyl Chloride) - Country of Manufacture: Japan 【Air Pump】 ※Due to the nature of the product, about 1 in 30 balls may not inflate properly and the air may leak out. Please understand. In most cases, the balls will inflate properly!