These training shorts from Tufte are made of recycled polyester, and have a light and comfortable fit. The fabric is breathable, moisture-wicking and quick-drying, and the shorts have a drawstring and elastic in the back waist that keeps the shorts in place and makes them adjustable if necessary. The shorts combine a close-fitting, elastic base layer with a loose and stretchy outer layer. It has inner shorts in breathable compression material, so you don't need to wear underwear underneath. There are zipped pockets on the sides so you can take the most important things with you while you exercise. On the thigh there is a Tufte reflective logo so you will be seen if you go for a jog in the evening.