Manufacturer Model No. 521021
ATP XD is the official ball of the ATP and used in 10 of the top 14 tournaments worldwide. In extra duty felt for hard court surfaces.
Features
SMART OPTIK Felt Technology--the ultimate in visibility - the felt registers 19%
brighter than a standard tennis ball.
Based on Vectorscope Digital Test Data Feb 2001
Official ball of the ATP
Used in 10 of the top 14 tournaments worldwide
Long wearing woven felt covering
High-elastic seams reduce cracking
Technical grade hevea rubber core for precise bounce