Comment: Stoney Creek Black Stag sleeping bag. Lightest weight sleeping bag: The Black Stag 500 is ideal for those who need to travel fast and light in warmer conditions, or for sleeping in huts. Compact and convenient: The Black Stag 500 easily compacts down, making it great for those with limited space. It also features a centralised zip for optimal comfort and ease of entry/exit. High insulation down fill: The sleeping bag is filled with a 650 CUI high insulation down fill, offering a great warmth-to-weight ratio. Comfortable and warm: The Black Stag 500 features a tapered rectangular fit for more comfort, a low profile hood for maximum warmth, and a single-draft tube which seals the zip and prevents warm air from escaping or cold air from getting in. Additional features: The sleeping bag comes with a waterproof / seam sealed compression bag for ultra compact storage, and is filled with high quality, responsibly sourced duck down of 90/10 grade (meaning 90% pure down and 10% feather).