Nike Pro training pants.

The pants are Nike Pro Hyperwarm Training Leggings.  Information about these leggings: * Type:
Nike Pro Hyperwarm Training Leggings, designed for training and athletic activities. 
 * Features:
They often feature Nike's Dri-FIT technology to wick away sweat and Hyperwarm fabric designed to keep you warm and dry. 
 * Design:
The specific pair in the image has a distinctive geometric print in shades of blue/green and white, along with a neon green waistband featuring "NIKE PRO" branding. 

* Material:
Typically made from a blend of polyester and spandex for flexibility and comfort.