Smaller than a tin of beans and weighing just 100g, sleeping mats for the weight conscious. We seem to hear the term lightweight camping used a lot these days but just how far are you prepared to go in your quest to shave off the grams? How does a 100gram bed sound? Designed for two-day unsupported running and biking events like the KIMM, SLMM, LAMM and Polaris, Balloon Beds really do use inflated balloons, no joke! Designed in the UK all the info (and spare balloons) can all be found on the official Balloon bed website.