This Voksi City North baby sleeping bag combines natural wool and high-quality down (over 80% down, 20% feather) to keep children warm through autumn and winter. Wool in the back helps regulate temperature and keep the child dry, while a soft cotton inner offers a gentle surface against delicate skin. Unique box construction and lofted down that traps air deliver maximum insulation, and a windproof 100% nylon outer with a minimum 8000 mm water column plus BIONIC-FINISH®ECO water-repellent coating protects against light rain. This fits all strollers and is compatible with 5-point harnesses for secure, easy use during walks. For heavy rain, add a rain cover, and always ensure plenty of air around the head while children sleep under supervision.