IQ cube key ring

Keep your brain buzzing on the go with this IQ cube key ring. Compact at just 3.5 x 3.5 cm, this multi-coloured mini puzzle is both a mental challenge and a nifty accessory. Clip it on and enjoy a spontaneous problem-solving session wherever you are. It's a little thinker's dream, small enough for your pocket, but a big test for your IQ.