G-FIT Women's Airpants Ultra Light Athletic Shorts Polyester: 95%, polyurethane: 5% Keeps you clean and comfortable even as you perspire. 4way stretch / Peachskin fabric / Quick drying / Moisture Wicking / Adjustable drawstrings / UV blocking / Keypocket / Retroreflective line Thin and lightweight: 0.3lb The size on the product tag is based on Japanese sizing system. e.g. M size on Amazon.com is Japanese L size.