Comfort: 4°C (39°F) Limit: -1°C (30°F) For the alpinist looking for a lightweight, low bulk bag suitable for spring and summer temperatures, the Neutrino 200 offers exceptional packability and warmth for its weight. Designed with a narrow mummy fit, for reduced bulk and pack size, and constructed with lightweight, high performance materials. Its perfect for two season mountain missions. The Neutrino 200 is filled with 200g of 800FP, goose down, stabilised in chevron shaped baffles, cleverly designed to reduce the amount of fabric needed compared to traditional horizontal baffles. The trapezoid boxwall baffle construction allows the down to fully loft, eliminates cold spots, and maximises warmth. Additional baffles along the length of the zip and around the neck decrease heat loss, and with an adjustable drawcord around the hood you can cinch the bag around your face. Now built with a recycled nylon lining and recycled Pertex® Quantum outer, its wind resistant and a little lighter on