Sea To Summit StS Spark SpIV - Long dark grey/yellow

Our SparkTM Series bags is what you reach for when you need a high performance sleeping bag but don’t want to be weighed down by one.
The SparkTM Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.
Lining: 7D nylon
Insulation: RDS 850+ Loft Premium Goose ULTRA-DRY DownTM
Weight: 985g
Temperature rating: -8 °C/ -15 °C/ -36 °C
Body length: 198cm
Packed size: 18 x 40cm Contoured mummy shape for efficient insulation
Updated sizing provides extra room for both shoulders and hips while still maintaining insulation efficiency
Includes lightweight Ultra-SilTM Nano compression bag for compact storage
Vertical box baffles in the torso area accommodates extra down and boosts warmth around the core, vertical baffles on chest optimises positions of down to prevent it moving during use
Lower part of the bag uses a sewn through horizontal baffle construction to minimise weight
1⁄2 zip with two sliders aids access and allows ventilation from mid-section of bag
Draft tube prevents heat loss through the zipper
Includes hood draft collar