Ligne Roset collection — it's a simple and classic design that delivers comfort as both a bed and a sofa. The look of the Nomade Express is definitively futon-esque — it is the high quality of materials, craftmanship and smooth transitioning parts that set it apart (that, and about $4,000). The transition process is fairly intuitive and the most difficult aspect is flipping the mattress. There are zippers to hold the mattress/cushion in place — but we found them to be rather tedious to use. So what sets the Nomade Express apart? Comfort and the hundreds of upholstery options available from Ligne Roset — plus with proper care, this should last a long, long time. Upholstery covers can be removed for dry cleaning (including the cotton cover on the reverse side of the mattress/cushion). MANUFACTURER Ligne Roset PRICE from $4,150 (lumbar pillows are extra) DESIGNER Didier Gomez DIMENSIONS 37.5"H x 80"W x 43.25"D Mattress height 16.5'' TRANSITION EASE B See all of our Sofa Sleepers of the Week. Aaron will be profiling a different sleeper every week. Is there one you're curious about? Let us know in the comments.