Sea to Summit Spark Down 45�F UDD Sleeping Bag

The Spark Down sleeping bag is the perfect option for lightweight adventures that puts comfort at the forefront. The optimal warmth to weight ratio and 850+ Fill Power makes this bag as comfortable as it is compact and easily packable.

• Mummy fit maximizes thermal efficiency and offers greater heat retention
• RDS Goose Down with Ultra Dry Down treatment for improved water-resistance in damp conditions
• Breathable 10D nylon used to provide high level of comfort with very low weight and packed volume
• Hood and footbox feature coated water-resistant version of 10D nylon to provide protection against tent wall condensation
• 1/2 length YKK® #5 zipper with zip-plow and two sliders
• Vertical chest baffles; horizontal baffles lower half and base; box wall baffles top half and sewn through quilted construction lower half
• Standard front draft collar
• Technical fitted hood with soft touch adjustment; extra deep for cozy feel
• CO Non-PFC water-repellent finish provides environmentally friendly resistance to condensation and other moisture
• Pairs with Sea to Summit® quilts
• Compression sack included
• Temperature rating in accordance with ISO 23537-1:2022: 51ºF / 11ºC (comfort), 45ºF / 7ºC (lower limit)
• Footbox girth: 40.2" (regular), 44.1" (long)
• Compressed volume: 2 liters (regular), 3 liters (long)