I was reluctant to post this because at £79.99 it's hardly "hot" or an impluse purchase, but this is the cheapest I have found one and they retail at well over £100 on most sites! Also, Quidco give you 10% back I think so it gets even better, they take Paypal (and if you can find yourself one of those McDonalds Monopoly stickers there's another fiver off!)
A Smooff will provide you with relaxation and enjoyment and will be useful for years to come. A Smooff is a really soft, high quality lounge cushion which can be used on the beach or by the pool, it can also be used as a 'put you up' bed for sleepovers in your house, as a camp bed for camping or on your boat. It can be used on its own and also as a cushion on a sun lounger. And er...It's also a chair! If you lie on one of these babies you will never want to get up! We've tested them and we can say without question that Smooffs are the softest, smooffiest lounge cushions we've ever tried. Absolutely perfect for the beach where you will not even feel the knobbliest pebble or rock, not even if you were the princess from the princess and the pea! The outer fabric is made from tough & durable, easy to clean, all weather-proof, fire-retardant polyester which can be wiped clean or removed completely for machine washing. Each Smooff® weighs in at only 5kgs and folds neatly into a backpack sized bundle with a fastening strap and carrying handle provided.
They currently come in Black, red, pink & lime green.