Ferrino Nightec 300 Sleeping Bag 100% Polyester Imported Lightweight sleeping bag, with an excellent weight/size/cold protection ratio. Ideal for 4-season use.. Mummy style bag with Microfibre insulation in 4 layers. Stretch feature allows the bag to hold closer to the body, for added warmth. "One touch" system to open or close the hood from inside, with just one hand Inner and outer layers separated for maximum heat efficiency.