Sea to Summit Hamelin Women's Synthetic Sleeping Bag

The Sea to Summit Hamelin is a women's-specific synthetic sleeping bag with a mummy shape contoured for side and figure-four sleeping positions rather than a generic unisex taper. Recycled Revive Loft insulation keeps warmth even if the bag gets damp, which matters more with synthetic fill than down, and a draft collar plus draft tube seal heat in at the neck and along the zipper. The two-way, full-length zipper lets you vent from the bottom on warmer nights without fully opening the bag. At 1447 g it sits in synthetic-bag territory — heavier than an equivalent down bag but more forgiving of humid conditions and easier to care for. No temperature rating is listed here, so pair it with your own layering and pad choice rather than assuming a specific comfort limit. Recycled fabrics and bluesign certification round out the build. This suits female hikers on three-season trips where damp weather or less careful gear handling makes synthetic fill the safer bet over down.