Where's the best place to buy a decent travel pillow in Manhattan?

I’m going to be going straight into work after an overnight flight from NYC to London, and could really do with a good night’s sleep on the way back… As I’ll be travelling Economy, a good quality travel pillow is a must, and I can’t order one; I’ll have to just get it from a store while I’m there! Can anyone advise me where to go? Thanks! :)


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