The lightweight and ventilated Orca Waist Belt is designed to work hand in hand with the Orca Audio Bag and is ideal for working outdoors or on location. The Orca Waist Mixer Belt features EVA & Mesh materials for maximum ventilation and a quick release buckle for on the go mixing. The OR-37 is compatible with all Orca Audio Bags (OR-30, OR-32, OR-34 and OR-41)