Tennis balls: St. JAMES Premium, 190 balls Opened between July 6th and September 28th, approximately three months. Used for 4 hours a week on an Omni court. (Relatively new ones are marked with magic marker: 1 line for August opening, 2 lines for September opening). Almost half were opened in August 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 Brand: St. James Premium Shipping: 140 size