Sea to Summit Spark SpIV Ultralight Down Sleeping Bag (-15°C)

Ultra-light and technical, the Sea to Summit Spark™ Series bags are designed to keep you as warm as possible while minimising packed weight and size.

• 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
• Note: This bag is not designed to pair with another