There is no standardized laboratory test for quilts like there is for sleeping bags, so precise temperature ratings cannot be provided for this quilt. In the northern parts of the Nordic region, this can be considered suitable for summer use, while in more southern areas, its use may extend slightly into spring and autumn. The Caldera quilt is suitable for tent camping and as bedding in a camper van, for example. It's also a comfortable choice for those who find narrow sleeping bags restrictive. - The quilt contains 180 grams of insulation fiber made from recycled material - Outer fabric: 20 denier polyester with a thread count of 400T - Lining fabric: softly brushed 190T polyester - Filled with Isofill Premium insulation fiber