Kelty Space Cadet 40

The Kelty Space Cadet 40 is a rectangular kids' sleeping bag with a comfort rating of 4°C (about 40°F) and synthetic insulation, weighing 560 g. Synthetic fill rather than down makes sense here — it handles the inevitable spills and washing that come with a toddler's or infant's sleeping bag far better than down, at the cost of being bulkier per degree of warmth. Kelty designed it around safe-sleep features for the youngest campers, so it's built for family camping trips in mild, above-freezing conditions rather than shoulder-season backpacking. At a 4°C comfort rating, treat it as a warm-weather to cool-evening bag — for camping trips where night temperatures drop toward or below freezing, a warmer-rated kids' bag would be the safer choice.