Designed for hikers who are mindful of every gram, the UltralightBed combines technical performance and optimal comfort. Combining an ultralight duvet (4°C or -12°C versions) with a half-length base (“sheet”), insulated or uninsulated, this model offers a modular, compact, and comfortable system without compromising on weight (from 558 grams). With its ExpeDry™ 900 cuin goose down or Muscovy down, Pertex® Quantum fabric, and semi-rectangular design, every detail guarantees warmth, breathability, and freedom of movement. Ultra-compact (71), it is ideal for long hikes, bikepacking, or fast alpinism.