Hamelin Synthetic Sleeping Bag

Ultra-Dry Down is a non-PFC treatment hydrophobic treatment applied to the down during down processing. It is not a coating (which would reduce the ability of the down to loft), it comprises of very small particles of a polymer that cause the down clusters / feathers to repel water. Hydrophobic down is not waterproof; but it absorbs less water than untreated down and dries much more quickly.

Ultra-Dry Down does not affect the loft or lifespan of the down, or its breathability. The treatment will last through at least 20 washings.

The polyester in the main body fabric contains 100% certified recycled content, independently certified to the Recycled Claim Standard (RCS). The RCS verifies recycled content and tracks it from the source to the final product. The purchase of RCS-certified products demonstrate demand for recycled content. Sea to Summit is certified to the RCS by Control Union License 1114661.

To learn more about RCS visit https://textileexchange.org/standards/recycled-claim-standard-global-recycled-standard/

Our Free-Flow triple-zip design ensures your sleeping bag retains maximum warmth and efficiency when needed and multiple ventilation options when it's not. The half-zip on the right side of the bag (left side on women's bags) provides freedom of movement for both arms, additional ventilation and allows the top third of the bag to be folded down as a mini quilt when the mercury climbs higher than expected.