The Eureka Sandstone line of bags is a great on-the-go choice for car and cabin camping and outdoor excursions in temperate conditions. They are warm, comfortable,and tough, a great all around bag at a great price. Eureka!'s recreation sleeping bags feature ThermaShield premium polyester fill, a less expensive alternative to down for its warmth and softness. ThermaShield's 7 hold construction expertly traps warmth inside for excellent performance in cold temperatures. These rectangular bags are sized to enhance the outdoor experience for all campers.