We've been say here trying to think which design this reminds us of, but we just can't pinpoint it. Regardless of that, this is the Ikea PS Vago easy chair and it is a very cool chair for the time of year.
Very reminiscent of the space age era of the 1960s, the chair is available in five colour options (two of which are pictured here), with each one made of plastic which is both UV stabilised and fade resistant, featuring a drain hole and a shape that makes it easy to stack (if you want a few).
You could probably afford more than one as well, with a price of just £25.
It reminds me of the Toga chair by Sergio Mazza: http://www.muellerherz.de/pic_stuhl/Toga.jpg
http://www.objectplastic.com/2012/11/vicario-armchair-vico-magistretti.html