Maybe you won’t bring your speaker along with you when you go to picnic.  It is too redundant and can be a burden if you have to walk very long to reach the picnic location. The alternative is you can take this Cooladio Solar Cooler picnic bag instead.

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The Cooladio Solar Cooler from Picnic Plus is not just a picnic bag but it also has a built-in solar-power docking station. Which mean you will no need to bring your speaker anymore. On top of that, you also no worry to bring batteries, it is solar powered device. As long as the sun is come up, it will  juiced up you mp3plaer so that it can continue to let the good times roll. The Cooladio has two speakers for you to hook up your MP3 player too and also a headphone jack if you want to listen alone.