The mark consists of three dimensional trade dress comprising the interior of an athletic facility offering training in the field of tennis consisting of the combination of all of the following elements: three light grey quadrilaterals, outlined in yellow with yellow horizontal and vertical lines within the quadrilateral, indicating kids size tennis court markings for instruction of children; red horizontal and vertical lines that indicate a bigger tennis court markings for instruction of older children; the floor of the court is dark grey with 3 light grey rectangles denoting the courts; The lower walls of the court consist of dark grey, light grey and yellow stripes in uneven vertical combinations; the numbers "3" and "4" appear in white within black circles indicating the court numbers. At the top right of the number "3" are a series of black dots forming an arc and 3 separate black dots on the bottom left, top left and mid-right of the circle, a short line protrudes from the left of the circle with a winged bird design to the top left of the circle, the number "4" has a semi-circle of black dots to the top right with three separate black dots to the mid-right, lower left and top left of the circle, the bottom left of the number "4" is a black winged bird design, a short black line protrudes from the bottom right of the circle; black nets go across the entire center of a court; on either end of the net are the word/number "COURT 16" with the word "COURT" appearing in white against a grey background, the number "16" appearing in black against a yellow circular background and 8 yellow dots in an arc design starting under the letter "O" in court. Matter shown in broken or dotted lines is not part of the mark and serves only to show the position or placement of the mark.