Stansport Weekender Rectangular Sleeping Bag (Green Plaid, 45-Degree) 100% Polyester Imported Poly-Therm synthetic insulation is a hollow polyester fiber that will not lose insulating efficiency if wet Soft yard dyed flannel lining, roomy 33"X75" rectangle design Durable polyester outer shell, Custom stuff bag includes compression straps Large self repairing zippers Comfort Rating: 40 degrees