This modified mummy features unique Wave construction that blends the comfort of a traditional blanket-style bag with the warmth of shingle construction, all without significantly increasing the weight of the bag. Polyester a durable water-repellent shell is stuffed with SpiraFil insulation that is soft and highly compressible. Dual zippers offer the ability to fold back the top of the bag for added comfort in warmer weather. Three-dimensional Nautilus hood seals in heat. Trapezoid footbox. Imported.
I bought two - for himself and his wife. Very handy when you can unscrew the heat down, and do not suffer from the heat. They are very compact, and weigh a little bit. Easy to store, easy to carry. I will use them in the summer in the North.