The Ultra 3R Mummy is a 1-person inflatable mattress from Exped. The Ultra 3R Mummy mattress is very compact and light. The integrated pump lets you inflate the mattress quickly and easily without having to wear yourself out. In addition, the insulation is ideal for use in all seasons and its 7cm thickness ensures excellent comfort. In short, the Ultra 3R mattress is ultra-light and perfect for trekking, hiking and mountaineering!