This polyester insulated sleeping bag is great for temperatures down to 40 F. At 33" x 75", you will have plenty of room to get comfy. Sleeping Bag 33" x 75" adult size O.D. polyester outer Gray polyester cotton liner 3 lbs. Insulation; polyester insulation. Quilt-through construction. Full two-way #5 zipper. Two elastic roll-u straps. Machine washable. Comfort rating of 40 Degree. Flip bag.