A synthetic doublewide sleeping bag for couples. Features center no-draft flap. Fabric piece with Velcro closures on the center gives you the option to attach the top of the body of the bag to the center of the hood to eliminate more drafts when you move in your sleep. Shell: Nylon rip-stop with WR surface treatment to repel water. Lining: Soft, breathable Nylon taffeta with stain resistant finish. Pad sleeve: Nylon rip-stop. WR surface treatment to repel water. Synthetic insulation: SL90 synthetic insulation offers excellent warmth due to its approximately 20% higher loft than similar fills as well as a soft feel and great compressibility.