NIKE Expandable Running Lean Waistpack (Pink Pow/Black) Nike Expandable Running Lean Waistpack. Expandable stretch mesh fabrication / Lightweight, breathable, and waterproof Convenient zip compartment / Secure storage for keys and other small items Adjustable elastic belt / Fits securely and comfortably High contrast Swoosh, zipper pocket, and tabs / Visibility and safety Unisex