Sea to Summit Spark SpIII

Now we're getting serious. Engineered for the kind of trips where you just know the temperature is going to be plummeting sub-zero during the night, the SPlll is a well-considered and thoroughly thought-out piece of kit that will exceed all of your previous sleeping bag expectations. Whether you've found the bravery to head out into the lake district peak winter, or are the bonkers type who likes to push their limits in alpine conditions, the SPlll is the kind of sleeping bag you can rely on.
Being ultra-light and technical, the SPlll assures the minimal weight and pack size whilst still kicking out a huge amount of potential warmth. Sea to Summit aren't keeping any secrets, the amazing performance of the SPlll comes entirely down to how well constructed it is, utilizing clever engineering to produce it's top-spec capabilities. Using premium materials, the SPlll is constructed of a high-performance 10D Nylon shell and 7D lining fabrics, these house a lavish offering of RDS 850+ Loft premium goose down. Alongside this, a light-gauge #3 YKK zip allows you to open the bag up if the weather turns out on your side for once. These materials are combined with a contoured mummy design for efficient insulation.
An ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation inside your tent, it virtually eliminates the negative effects moisture has on down, therefore the SPlll is the kind of sleeping bag that performs in all less than ideal elements, whether they are wet or just freezing cold. All Sea to Summit Down Sleeping Bags use Responsible Down Standard (RDS) certified down. With all this protection, the SPlll from Sea to Summit is a high-performance sleeping bag, that still retains its versatility and practicality. All absolute all-rounder, gone are the days of sleeping bag shopping, you've just got the best bag you've ever had.

**Technical Specifactions**

- Uses a full box baffle construction to accommodate extra down and reduce cold spots

- Expedition mummy bag sizing provides extra space for layered clothing or extra wriggle room

- Vertical baffles on chest optimises positions of down to prevent it moving during use

- Full side zip with two sliders provides easy access and extra ventilation options

- Zipper draft tube, hood and front neck draft collar to prevent warmth being lost when it’s needed

- Gender: Unisex

- Insulation Type: Down

- Down: RDS 90/10 Premium Goose Down

- Fabric: 10D Nylon Shell

- Fill Power: ULTRA-DRY Down® 850+ Loft

- Fill Weight: Regular: 430g, Long: 485g

- Shape: Contoured Mummy

- Temp Rating: EN -2°c Comfort to -8°c Lower

- Weight: Regular: 665g, Long: 745g