Wenger Logan Mummy 10-Degree Sleeping Bag with Comfort Layer (Grey, Black, Red) Multi-layered mummy-style sleeping bag with variable temp rating--10 degree Fahrenheit maximum 30-degree protection by removing comfort layer; three-inch full-length, weather-strip draft tube Trapezoidal foot section with zippered opening for ventilation Filled with 72 ounces of Swiss-Therm Elite polyester fiber fill Measures 90 by 33 inches; includes oxford nylon stuff sack