From Trimtex:
"These tights have an ergonomic fit and are developed with an elastic fabric with four-way-stretch, which means the running tights will follow your movements very well. The fabric is dries quickly and ventilates well. These training tights have elastic band with lacing at the waist, mesh lining on the inside, reflective details, and a zip pocket in the back. On slightly colder days, the ¾ tights can be used in combination with compression socks as an alternative to the long tights. The tights allow a great motion range and fit most. However, they have a tight fit and will hug the body tightly."