The Cosma sleeper sofa, created by Thomas Müller and Jörg Wulff for COR, is one of my long time design loves. The minute I saw it in 2007, I’ve made a vow that as soon as I taste financial freedom – I’ll own this brilliant thing. It hasn’t happened for me yet, but for some of you it might – the sofa is on sale at Fab for the next 6 days via Domus Design Collection. Sleek and elegant, Cosma looks nothing like a convertible sofa. All you can see is a modern and attractive 3-seater. The piece features customizable armrests, that slide freely along the slot on the back. An innovative mechanism, hidden on the bottom of the seat, transforms Cosma into a comfortable bed.