The Spark Pro sleeping bag is the perfect option for lightweight adventures that puts comfort at the forefront.With the ability to be adapted to a range of conditions, the Spark Pro is as lightweight as it is versatile and functional. The optimal warmth to weight ratio makes this bag as comfortable as it is compact and easily packable.MaterialsGoose Down with Ultra Dry Down treatment for improved water resistance in damp conditions.10 Denier Nylon and 10D Nylon, these lightweight fabrics offer breathability, protection and effective temperature regulation for premium comfort.FeaturesMummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.Free Flow Zip System:- Primary zip - full length with zip-plow and two sliders.- Secondary zip - 1/4 length with zip-plow and two sliders.- Footbox zip - with two sliders.Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout.Fitted front draft collar: scalloped over the neck and oversized at the shoulders.Technical fitted hood with soft touch adjustment. Extra deep for cosy like feel.Single, down-filled, draft tube along the top of all zippers.Long length.Temperature RatingsComfort: -2°CLower Limit: -8°C Sea To Summit Spark Pro -9C Down Sleeping Bag - Long