On're CourtViper Series One: Optical Rhythm LeggingThese full length leggings have been specifically designed for the needs of sportswomen with breathable mesh vents, moisture wicking fabric and great stretch ability to help keep you mobile. They also have an amazing ball pouch that fits up to 4 tennis balls! It works equally well with pickleballs too. The pouch lets you securely slip tennis balls in and quickly slip them out when needed it runs the length of the back waistline so it works wonderfully