Size 4 Description from Seller: Lightweight Four-way stretch Sweat-wicking Quick-drying Luxtreme™ fabric liner has mesh panels for ventilation and is sweat-wicking and four-way stretch with a cool, smooth feel Added Lycra® fibre for stretch and shape retention Dual-entry pocket in the liner holds a tennis ball and your phone Back drop-in pocket Pocket lining: 82% Nylon, 18% Lycra® elastane Inner center mesh panel: 89% Nylon, 11% Elastane Outer waistband: 77% Nylon, 23% Lycra® elastane Body: 86% Polyester, 14% Lycra® elastane Liner: 87% Nylon, 13% Lycra® elastane