The Mountain Equipment XEROS LONG is your ultralight winter sleeping bag for true mountain enthusiasts who don't want to compromise on alpine ridge walks and multi-day climbing tours. Weighing just 1010 g and containing 605 g of high-quality, DOWN CODEX-certified goose down (minimum 800 cuin fill power), it offers first-class warmth with minimal weight. The robust, water-repellent, and breathable DRILITE® LOFT 10D outer material provides reliable protection against condensation, even on the hood, thermal collar, and foot section. The innovative EXL® technology keeps the down close to the body for optimum warmth. Thanks to the trapezoidal chamber construction with seven hood chambers, evenly distributed warmth, and the anatomically shaped foot section, nothing slips out of place—you stay warm all night long. The long Gemini™ zipper with magnetic Lode Lock™ closure minimizes heat loss, while the slim Alpine Fit offers enough space for extra clothing or shoes—perfect for tight bivouac sites. The XEROS LONG is tested to a "Good Night's Sleep" -14°C comfort temperature for restful nights in extreme conditions. Rely on the highest quality and best performance when it matters most.