Specifications: Colored balls are very suitable for high visibility in low light conditions, which are easier to be found. The outer shell is made of titanium-containing sarin material, which has better resistance to hitting. Middle layer is a single-layer soft design, and the center of the ball is high-elastic rubber with better elasticity. Item Name: Golf Ball Material: Synthetic Rubber, Synthetic Resin Elasticity: 75% Hardness: 75 Features: Durable, Golf Tool, Easy to Use Size: 4.2cm/1.65" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 10 x Golf Balls