The ultra-thin, featherweight membrane material of the Compressport Trail Racing Short is designed for fast, free running in hot weather. The fabric is soft and smooth, moving with you as you run without catching between the thighs. It is highly ventilated so that it doesn't stick to your skin and chafe while a wide, secure waistband and added drawstring offer comfort and easy adjustment. Finished with integrated pockets in the belt to carry nutrition and small personal belongings.