The D'Addario reed case is a humidity control system for clarinet and saxophone reeds, capable of holding 8 reeds. - Brand: D'Addario - Model: Reed Case - Function: Humidity control system - Compatible instruments: Clarinet/Saxophone - Capacity: 8 reeds - Humidity level: 72% Thank you for looking. The box is loose, but the item is unused. It can hold reeds of various sizes. I used to use the same one before, and I stored baritone saxophone reeds in it. That's probably the largest size it can accommodate. Price negotiations are welcome.