The Spark III is the warmest in the Spark series and is one of the best warmth-for-weight sleeping bags available.The Spark III will serve you well for spring, summer and mild winter adventures.
The Spark is the lightest and most compact technical sleeping bag Sea to Summit makes. It's an excellent summer bag whether you're hiking, bikepacking or cycle touring. It also works as a booster bag, slipping inside another sleeping bag to add warmth. Ultra light and mummy shape, it has everything you need to keep you warm and it will hardly take up any space.
