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![Sea to Summit Trek Down Sleeping Bag 15F/-9C Sea to Summit Trek Down Sleeping Bag 15F/-9C](https://cdn11.bigcommerce.com/s-45mun2obzo/images/stencil/500x659/products/17412/112837/TrekDownSleepingBag-9C-15FRegular_ASL041172-050203_PRIMARY_rsz__15567.1711583293.jpg?c=1)
Sea to Summit
Trek Down Sleeping Bag 15F/-9C
$299.21 - $300.26
If you're counting grams, but still count on a great night's sleep, the Spark just may be the ideal bag for you. Filled with RDS-certified 850+ fillpower goose down treated with a non-PFC Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 denier liner fabric, while a 10D shell with a non-PFC DWR with highly water-repellent fabric on the hood and footbox sheds wind and condensation. This full-length zipper model can be zipped to an equivalent women's Spark for comfort that couples can share.