These sweat pants are part of the new Kids Luxury Street Wear Line made by Tiny Tycoon. 
The features on these essential joggers includes:
Unique YKK vislon zippers
Easily pull-on (Elasticized waistband)
Adjustable waistband with drawcords with dipped dyed ends
Rib waistband and leg cuffs
Functional front zipper pockets
Back Pocket
 
Fabric: 95% organic cotton, 5% spandex
Care: machine wash cold water, tumble dry