This pickleball is specifically designed with seamless integrated construction ensures a stronger, longusing time pickleball that resists dents and cracks on outdoor pickleball courts. 74mm diameter,40 holes. Outdoor luminous pickleball is made of high quality material, luminous, good performance. High visibility colors outdoor pickle balls, pickle balls are great for outdoor playgrounds. The luminous pickle ball is constructed with 40 precision machine dilled holes for a balanced flying pattern and tight, reliable rotate.