The Big Muscle Sports Pack is made of durable 1680 high-density pongee ripstop nylon, perfect for active lifestyles and daily use. It features a built-in slot for earbuds, front zippered pocket, internal pocket with hook and loop closure, and heavy-duty cord straps for long-lasting wear. With a secure drawstring closure and easy-care design, it’s ideal for custom silkscreen or embroidery decoration—great for gyms, teams, and promotional events.