Spark Ultralight Sleeping Bag -18, Grey OS

Sea to Summit's Spark Ultralight Sleeping Bagis engineered to keep you warm at the lightest weight and smallest compressed size._Ultralight doesn't mean cramped; the Spark's snug mummy shape is designed to keep the heat in, but still gives you enough room to move comfortably after a long day on the trail. Ideal for fast-moving, backcountry explorers who don't want to carry a gram more than they need._Suitable for lightweight liners and summer getaways as well as warm, packable bags that'll see you through chilly winter nights. Designed with premium materials and a fuss-free focus on performance, these bags keep things simple without skimping on quality._850+ FILL Power, RDS-certifiedGoose Down with Ultra Dry Down treatment for improved water resistance in damp conditions10-Denier Nylon shell and lining10-Denier Nylon waterproof-breathable hood and footboxMummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weightSpark 7C/4