The PLUTON UL 40 850 DOWNTEK LONG sleeping bag from BIG AGNES is incredibly ingenious. Its minimalist design makes it super light and compact, so much so that you wonder if it even fits in your bag.

The sarcophagus shape and small flat hood provide comfort and warmth when needed. The DownTekTM duck down fill is lightweight and naturally water repellent to maintain its thermal qualities. With a 4C comfort limit temperature, it is an excellent down for summer bivouacs or overnight stays in a refuge.

The outer fabric that wraps the insulation is highly technical, made of Pertex Quantum nylon rip-stop with a water repellent treatment to withstand pink or light rain.

Finally, for ease of use, the designers designed a full-length, two-way zip so you can regulate your warmth as you see fit.