Sea to summit Spark Pro-1°C sleeping bag

Conquer chilly nights with the SEA TO SUMMIT Spark Pro -1°C sleeping bag. This ultralight marvel boasts 850+ fill-power down for exceptional warmth without bulk. Its innovative Free-Flow triple-zip system transforms it into a quilt for ultimate versatility and ventilation. Perfect for fast-and-light adventurers, alpinists, and backpackers, this bag offers a customizable sleep experience from alpine bivouacs to extended treks. Engineered for thermal efficiency with advanced insulation mapping, it packs down incredibly small, saving precious pack space. A technical hood, draft collar, and efficient mummy shape seal in heat, ensuring comfort within its 5 to -5 °C range