Sea to Summit
Sea to Summit Spark SP1 Ultralight Down Bag
$228.99
Sea to Summit Spark SP1 ultralight down sleeping bag compresses to a volume smaller than a 32 oz water bottle and weighs under 1 lb — the benchmark for a category of sleeping bags built for fast-and-light alpinism, ultralight backpacking, and any application where gram-counting is the primary design constraint. The 750+ fill power hydrophobic down delivers warmth-to-weight ratio that synthetic fills cannot match at the same pack volume.
- Under 1 lb total weight — meaningful for gram-conscious pack planning
- 750+ fill power hydrophobic down — superior warmth-to-weight ratio
- Compresses smaller than a 1-liter water bottle
- UltraDry treatment — moisture resistance in humid field conditions
- 3-season temperature range — appropriate for summer and shoulder seasons
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Specifications
Technical Details
- Brand
- Sea to Summit
- Category
- Sleeping Gear
- SKU
- B0DZCQ432W
- Shipping Weight
- 1.5 lb
- Availability
- In stock — ships in 1–2 business days
- Shipping
- Free standard shipping on US orders over $99
- Returns
- 30-day hassle-free returns
Common Questions
Frequently Asked
How fast does this ship?
Most orders ship within 1–5 business days. Free standard shipping on US orders over $99.
What is the return policy?
Returns accepted within 30 days in original condition. See our return policy.
Do you price match?
Contact us within 7 days of purchase with a competitor link and we will review.
