The Mountain Equipment HELIUM 250 LONG is your ideal sleeping bag for warm trekking adventures, offering minimal weight and maximum functionality. Its ultralight construction and compact pack size, comparable to a water bottle, make it perfect for backpacking. Filled with 261g of DOWN CODEX certified duck down (minimum 700 cuin fill power), it offers reliable warmth, while the 100% recycled Helium 20D outer fabric provides robust, breathable, and PFC-free protection. The diagonal box chamber construction ensures optimal down distribution without cold spots, and thanks to the slim Alpine 2.0 fit, you maximize the warmth-to-weight ratio. The anatomically shaped hood and foot section protect your most important heat zones, while the innovative Gemini™ zipper with Lode Lock™ closure retains heat and prevents annoying snagging. With a comfort temperature of 1°C, it guarantees you a restful night's sleep even on mild nights, so you're always light, warm, and well-rested on your tour.