The product is a set of two Dudley 12" Thunder Heat fastpitch softballs, official balls of USA Softball. Made of leather with a compression hardness of 375, these yellow balls feature a raised seam and are designed for weighted performance. With a COR of 0.47 and a core material of PU, these softballs are suitable for competitive softball games and practices. The Dudley brand is known for quality athletic products, making these balls a reliable choice for athletes looking to enhance their game on the field.