Stuffing a battery in your back pocket can ruin your clothes. The Waist Belt Production Pack eliminates that problem and a few more. Spare cassettes, lens tissue, pens and lavaliere microphones will always be at your finger tips. The specialized belt holds the two pouches in place and it has a quick release buckle. The small pouch (7.5"L x 3"W x 7"H) easily holds a brick battery in the main compartment and a beta tape in the outside pocket. The large pouch (11.5"L x 2.5"W x 7"H) holds the flatter NP1 and BP90 style batteries and cassettes. It has a divider in the main compartment, another divider in the outside pocket and a slip pocket for pens, sharpies, maglites and other small objects.