Having spent time researching sleep over the years, I realise just how important good sleep patterns are for healthy bodies and minds. I stumbled across Mammoth and was bowled over by their commitment to great research and quality products and am now an avid fan and have the Performance Pocket 2000 myself.  

"Night School: Wake up to the power of sleep" by Richard Wiseman is a fascinating book to read on the subject of sleep (@RichardWiseman)

It is really worth looking at Mammoth products as they really do what they say on the tin (@MammothMattress)