Bring back the 80?s and pump up your tunes with this super rad speaker (that also needs pumped up)! The Max Air Waves Inflatable Speaker is a very rare blast from the past that will give your cassette tape jams a whole new look and sound. Just blow it up, hook it up to your stereo using a stereo jack, and you are ready to rock! No amp or batteries needed. And if you do rock out too hard, no worries because it also comes with a patch kit just in case. The speaker measures roughly 17x17x17 (not counting the little legs that come on it).