The waist belt that started it all. The original, high performance Naked® Running Band redefines how to carry fuel, fluids, accessories, or trekking poles. Check out the that has a narrow top designed to work with this belt. 

Sizing is unrelated to your regular pant size.

Spencer says: 

The ultimate mountain tool for fast and light adventures. Has the capacity to handle all my food, water and even a light jacket. Grab this belt and head to the hills with just the right amount of stuff!