Nike Power fabric provides stretch and support Mesh insets enhance ventilation Zippered pocket offers secure storage Low-profile elastic waistband is perfect for layering - it has an internal drawcord to provide a personalised fit Articulated gusset adds support and an ergonomic fit Full length for full speed. Nike's Power Tech Running Tights deliver full-length coverage with breathable mesh insets, an elastic waistband and adjustable drawcord to keep your fit streamlined for speed.