This French-cut panty is wearable under any tennis skirt and is made of cotton and lycra to keep you cool and dry while hard at play. Plus it's unlined and has no ball pockets. Material/Fabric: 88% Cotton, 12% Lycra. Sizing: XS (4), S (6-8), M (10-12), L (14-16), XL (18-20). Pockets: None.