This is an effects board, a SPA-10 power adapter, and a storage bag. The board size is 14.6cm x 37cm x 2cm. It's very lightweight and has a belt that can be attached to a guitar gig bag. By using the adapter, you can compactly organize your equipment if you have four effects pedals with low power consumption (analog pedals should be fine). This makes it easy to bring to studio practice or sessions.