Designed for serious backpackers, the Summit Spark 0F Ultralight Down Sleeping Bag ensures you stay warm without the bulk. This water-resistant down sleeping bag with hood features RDS-certified, 850+ fill-power goose down, treated with an innovative non-PFAS Ultra-Dry Down for superior thermal performance.
The 10-denier shell not only resists wind but also sheds condensation, making it perfect for cold weather camping. With a breathable liner and a technical hood, this lightweight mummy sleeping bag for cold weather is designed to keep you cozy through the night. The full box baffles maximize warmth retention, while the YKK #5 zipper promises snag-free operation.
Couples can share comfort by zipping this bag to a compatible women’s Spark model (not included). The Sea to Summit guarantee backs your investment for a lifetime of adventures.
Terry Nguyen (verified owner) –
I took the Summit Spark 0F on a recent camping trip, and it truly lived up to its promise of warmth without the bulk. Highly recommend for anyone serious about backpacking!
Jodi Walker (verified owner) –
The lightweight design of this sleeping bag is fantastic! It packs down small and is easy to carry, making it a great choice for my hiking adventures.
Danielle White (verified owner) –
This is by far the best ultralight down sleeping bag for backpacking I’ve ever owned. The comfort level is amazing, and I felt cozy even in freezing temperatures.