There are slightly different functions on the different products.

Ball pocket biker shorts have pockets suitable for the ball or other accessories

Split skirt, Tennis dress in white & navy are not included with inner shorts, but here you can match with patterned or one-color according to your wishes and length of biker shorts.

Luxe skirt in white & navy has inner shorts but not pockets, but they still allow you to place the ball inside the fabric.