The Flexmat Grey/Orange from the brand Exped is a minimalist but comfortable foam mattress.Made from folding panels, this mattress is lightweight, durable and versatile. Folded, it is very light and can be used as a minimalist sleeping bag during a bivouac or as insulation under an inflatable mattress. Its closed-cell foam ensures minimal deformation after use. Once folded, this mattress can easily be attached to a rucksack, taking up minimal space.