Inflatable speakers

cebop POP Blowup-speakers claim:
The sound quality is better than conventional portable speakers, which don’t allow for much range and have a hollow, “tinny” sound. The plastic skin works as a resonating surface, allowing a richer and wider range of sound with more bass.
They're probably the only sound system that use an inflatable form to produce sound.
All that for meager $49.50 ...

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