Tennis balls: St. JAMES Premium, 180 balls Opened 10/5 - used for approximately three months until 12/28. Used for 4 hours a week on an Omni court. (Relatively new ones are marked with magic marker: 2 lines for November opening, 3 lines for December opening). Almost half were opened in November or later. Unlike the normal St. James, these are Premium, so I think the air pressure is still good. Please use them for junior ball feeding practice or baseball toss batting practice. Color: Yellow Type: Pressure ball Use: Hard court Type: St. James Premium Shipping: 140 size