Nike Challenger Running Waistpack Blue (Darker) Fannypack Brand New Never Used. For this color of blue I would consider it like a darker dirty blue. It almost looks like dark teal. This fannypack, waistpack is perfect for using when running. Waist band goes to about an XL size (roughly 38 inches around when strap is all the way out). Box states: SECURE zip pocket with internal divider. CONTOURED, lightweight design for comfort and less bouncing. BREATHABLE MESH backing helps you stay dry and comfortable.