For fast and light trips where don’t want to compromise on warmth, the Spark Sp3 will keep you comfortable while you sleep without the extra bulk.

The Sp3 features an expedition mummy shape to accommodate extra layers and to give you extra room to move. This bag has a 10D nylon shell and 7D lining to keep the weight to a minimum. For insulation, it’s filled with RDS certified 850 Loft Premium Goose down which has an ULTRA-DRY water-repellent treatment to protect it from moisture. The -2°C comfort rating and -8°C lower limit make it more suitable for colder sleepers or colder weather conditions.

For easy access and ventilation, it has has a full side zip with two sliders, while the zipper draft tube, front neck draft collar and hood help trap warmth to keep you comfy. This bag has a full box baffle construction to minimise cold spots, and vertical baffles on the chest to prevent the down moving around.

The Spark Sp3 from Sea to Summit offers a reliable sleeping solution that’s compact, lightweight but with enough warmth for your minimalist adventures in cooler conditions.

• -2°C comfort rating, -8°C lower limit
• Full box baffle construction to accommodate extra down and reduce cold spots
• Expedition mummy bag for extra wiggle room
• Zipper draft tube, hood and front neck draft collar
• RDS certified 850+ Loft premium goose down
• ULTRA-DRY down water-repellent treatment protects from moisture
• Light gauge #3 YKK zip
• Vertical baffles on chest prevent down moving during use
• Full side zip with two sliders provides access and ventilation
• Storage cell and compression bag included