Description: Made of good quality synthetic rubber, durable for long use. Lightweight and Flexible. 392 Bee hole, 75% elasticity, 42.6mm diameter, Compression hardness 90 Suitable for Hobbyist or Pro golfer. Great for golf training practice. Specification: Material: Synthetic Rubber Color: Yellow Size: 42.6mm/ 1.68inch Package Includes: 1 Piece Golf Practice Ball